summaryrefslogtreecommitdiff
path: root/INSTALL
blob: aa4bdd1637462fd8155f6c31eeb4483a753af33f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
Installing PHP
     _________________________________________________________________

   Table of Contents
   Preface
   1. General Installation Considerations
   2. Installation on Unix systems

        Apache 1.3.x on Unix systems
        Apache 2.0 on Unix systems
        Caudium
        fhttpd related notes
        Sun, iPlanet and Netscape servers on Sun Solaris
        CGI and commandline setups
        HP-UX specific installation notes
        OpenBSD installation notes
        Solaris specific installation tips
        Debian GNU/Linux installation notes

   3. Installation on Mac OS X

        Using Packages
        Compiling for OS X Server
        Compiling for MacOS X Client

   4. Installation of PECL extensions

        Introduction to PECL Installations
        Downloading PECL extensions
        PECL for Windows users
        Compiling shared PECL extensions with PEAR
        Compiling shared PECL extensions with phpize
        Compiling PECL extensions statically into PHP

   5. Problems?

        Read the FAQ
        Other problems
        Bug reports

   6. Runtime Configuration

        The configuration file
        How to change configuration settings

   7. Installation FAQ
     _________________________________________________________________

Preface

   These installation instructions were generated from the HTML version
   of the PHP Manual so formatting and linking have been altered. See the
   online and updated version at: http://php.net/install.unix
     _________________________________________________________________

Chapter 1. General Installation Considerations

   Before starting the installation, first you need to know what do you
   want to use PHP for. There are three main fields you can use PHP, as
   described in the What can PHP do? section:

     * Websites and web applications (server-side scripting)
     * Command line scripting
     * Desktop (GUI) applications

   For the first and most common form, you need three things: PHP itself,
   a web server and a web browser. You probably already have a web
   browser, and depending on your operating system setup, you may also
   have a web server (e.g. Apache on Linux and MacOS X; IIS on Windows).
   You may also rent webspace at a company. This way, you don't need to
   set up anything on your own, only write your PHP scripts, upload it to
   the server you rent, and see the results in your browser.

   In case of setting up the server and PHP on your own, you have two
   choices for the method of connecting PHP to the server. For many
   servers PHP has a direct module interface (also called SAPI). These
   servers include Apache, Microsoft Internet Information Server,
   Netscape and iPlanet servers. Many other servers have support for
   ISAPI, the Microsoft module interface (OmniHTTPd for example). If PHP
   has no module support for your web server, you can always use it as a
   CGI or FastCGI processor. This means you set up your server to use the
   CGI executable of PHP to process all PHP file requests on the server.

   If you are also interested to use PHP for command line scripting (e.g.
   write scripts autogenerating some images for you offline, or
   processing text files depending on some arguments you pass to them),
   you always need the command line executable. For more information,
   read the section about writing command line PHP applications. In this
   case, you need no server and no browser.

   With PHP you can also write desktop GUI applications using the PHP-GTK
   extension. This is a completely different approach than writing web
   pages, as you do not output any HTML, but manage windows and objects
   within them. For more information about PHP-GTK, please visit the site
   dedicated to this extension. PHP-GTK is not included in the official
   PHP distribution.

   From now on, this section deals with setting up PHP for web servers on
   Unix and Windows with server module interfaces and CGI executables.
   You will also find information on the command line executable in the
   following sections.

   PHP source code and binary distributions for Windows can be found at
   http://www.php.net/downloads.php. We recommend you to choose a mirror
   nearest to you for downloading the distributions.
     _________________________________________________________________

Chapter 2. Installation on Unix systems

   This section will guide you through the general configuration and
   installation of PHP on Unix systems. Be sure to investigate any
   sections specific to your platform or web server before you begin the
   process.

   As our manual outlines in the General Installation Considerations
   section, we are mainly dealing with web centric setups of PHP in this
   section, although we will cover setting up PHP for command line usage
   as well.

   There are several ways to install PHP for the Unix platform, either
   with a compile and configure process, or through various pre-packaged
   methods. This documentation is mainly focused around the process of
   compiling and configuring PHP. Many Unix like systems have some sort
   of package installation system. This can assist in setting up a
   standard configuration, but if you need to have a different set of
   features (such as a secure server, or a different database driver),
   you may need to build PHP and/or your webserver. If you are unfamiliar
   with building and compiling your own software, it is worth checking to
   see whether somebody has already built a packaged version of PHP with
   the features you need.

   Prerequisite knowledge and software for compiling:

     * Basic Unix skills (being able to operate "make" and a C compiler)
     * An ANSI C compiler
     * flex: Version 2.5.4
     * bison: Version 1.28 (preferred), 1.35, or 1.75
     * A web server
     * Any module specific components (such as gd, pdf libs, etc.)

   The initial PHP setup and configuration process is controlled by the
   use of the commandline options of the configure script. You could get
   a list of all available options along with short explanations running
   ./configure --help. Our manual documents the different options
   separately. You will find the core options in the appendix, while the
   different extension specific options are descibed on the reference
   pages.

   When PHP is configured, you are ready to build the module and/or
   executables. The command make should take care of this. If it fails
   and you can't figure out why, see the Problems section.
     _________________________________________________________________

Apache 1.3.x on Unix systems

   This section contains notes and hints specific to Apache installs of
   PHP on Unix platforms. We also have instructions and notes for Apache
   2 on a separate page.

   You can select arguments to add to the configure on line 10 below from
   the list of core configure options and from extension specific options
   described at the respective places in the manual. The version numbers
   have been omitted here, to ensure the instructions are not incorrect.
   You will need to replace the 'xxx' here with the correct values from
   your files.

   Example 2-1. Installation Instructions (Apache Shared Module Version)
   for PHP
1.  gunzip apache_xxx.tar.gz
2.  tar -xvf apache_xxx.tar
3.  gunzip php-xxx.tar.gz
4.  tar -xvf php-xxx.tar
5.  cd apache_xxx
6.  ./configure --prefix=/www --enable-module=so
7.  make
8.  make install
9.  cd ../php-xxx

10. Now, configure your PHP.  This is where you customize your PHP
    with various options, like which extensions will be enabled.  Do a
    ./configure --help for a list of available options.  In our example
    we'll do a simple configure with Apache 1 and MySQL support.  Your
    path to apxs may differ from our example.

      ./configure --with-mysql --with-apxs=/www/bin/apxs

11. make
12. make install

    If you decide to change your configure options after installation,
    you only need to repeat the last three steps. You only need to
    restart apache for the new module to take effect. A recompile of
    Apache is not needed.

    Note that unless told otherwise, 'make install' will also install PEAR,
    various PHP tools such as phpize, install the PHP CLI, and more.

13. Setup your php.ini file:

      cp php.ini-dist /usr/local/lib/php.ini

    You may edit your .ini file to set PHP options.  If you prefer your
    php.ini in another location, use --with-config-file-path=/some/path in
    step 10.

    If you instead choose php.ini-recommended, be certain to read the list
    of changes within, as they affect how PHP behaves.

14. Edit your httpd.conf to load the PHP module.  The path on the right hand
    side of the LoadModule statement must point to the path of the PHP
    module on your system.  The make install from above may have already
    added this for you, but be sure to check.

    For PHP 4:

      LoadModule php4_module libexec/libphp4.so

    For PHP 5:

      LoadModule php5_module libexec/libphp5.so

15. And in the AddModule section of httpd.conf, somewhere under the
    ClearModuleList, add this:

    For PHP 4:

      AddModule mod_php4.c

    For PHP 5:

      AddModule mod_php5.c

16. Tell Apache to parse certain extensions as PHP.  For example,
    let's have Apache parse the .php extension as PHP.  You could
    have any extension(s) parse as PHP by simply adding more, with
    each separated by a space.  We'll add .phtml to demonstrate.

      AddType application/x-httpd-php .php .phtml

    It's also common to setup the .phps extension to show highlighted PHP
    source, this can be done with:

      AddType application/x-httpd-php-source .phps

17. Use your normal procedure for starting the Apache server. (You must
    stop and restart the server, not just cause the server to reload by
    using a HUP or USR1 signal.)

   Alternatively, to install PHP as a static object:

   Example 2-2. Installation Instructions (Static Module Installation for
   Apache) for PHP
1.  gunzip -c apache_1.3.x.tar.gz | tar xf -
2.  cd apache_1.3.x
3.  ./configure
4.  cd ..

5.  gunzip -c php-5.x.y.tar.gz | tar xf -
6.  cd php-5.x.y
7.  ./configure --with-mysql --with-apache=../apache_1.3.x
8.  make
9.  make install

10. cd ../apache_1.3.x

11. ./configure --prefix=/www --activate-module=src/modules/php5/libphp5.a
    (The above line is correct! Yes, we know libphp5.a does not exist at this
    stage. It isn't supposed to. It will be created.)

12. make
    (you should now have an httpd binary which you can copy to your Apache bin
dir if
    it is your first install then you need to "make install" as well)

13. cd ../php-5.x.y
14. cp php.ini-dist /usr/local/lib/php.ini

15. You can edit /usr/local/lib/php.ini file to set PHP options.
    Edit your httpd.conf or srm.conf file and add:
    AddType application/x-httpd-php .php

     Note: Replace php-5 by php-4 and php5 by php4 in PHP 4.

   Depending on your Apache install and Unix variant, there are many
   possible ways to stop and restart the server. Below are some typical
   lines used in restarting the server, for different apache/unix
   installations. You should replace /path/to/ with the path to these
   applications on your systems.

   Example 2-3. Example commands for restarting Apache
1. Several Linux and SysV variants:
/etc/rc.d/init.d/httpd restart

2. Using apachectl scripts:
/path/to/apachectl stop
/path/to/apachectl start

3. httpdctl and httpsdctl (Using OpenSSL), similar to apachectl:
/path/to/httpsdctl stop
/path/to/httpsdctl start

4. Using mod_ssl, or another SSL server, you may want to manually
stop and start:
/path/to/apachectl stop
/path/to/apachectl startssl

   The locations of the apachectl and http(s)dctl binaries often vary. If
   your system has locate or whereis or which commands, these can assist
   you in finding your server control programs.

   Different examples of compiling PHP for apache are as follows:

   ./configure --with-apxs --with-pgsql

   This will create a libphp5.so (or libphp4.so in PHP 4) shared library
   that is loaded into Apache using a LoadModule line in Apache's
   httpd.conf file. The PostgreSQL support is embedded into this library.

   ./configure --with-apxs --with-pgsql=shared

   This will create a libphp4.so shared library for Apache, but it will
   also create a pgsql.so shared library that is loaded into PHP either
   by using the extension directive in php.ini file or by loading it
   explicitly in a script using the dl() function.

   ./configure --with-apache=/path/to/apache_source --with-pgsql

   This will create a libmodphp5.a library, a mod_php5.c and some
   accompanying files and copy this into the src/modules/php5 directory
   in the Apache source tree. Then you compile Apache using
   --activate-module=src/modules/php5/libphp5.a and the Apache build
   system will create libphp5.a and link it statically into the httpd
   binary (replace php5 by php4 in PHP 4). The PostgreSQL support is
   included directly into this httpd binary, so the final result here is
   a single httpd binary that includes all of Apache and all of PHP.

   ./configure --with-apache=/path/to/apache_source --with-pgsql=shared

   Same as before, except instead of including PostgreSQL support
   directly into the final httpd you will get a pgsql.so shared library
   that you can load into PHP from either the php.ini file or directly
   using dl().

   When choosing to build PHP in different ways, you should consider the
   advantages and drawbacks of each method. Building as a shared object
   will mean that you can compile apache separately, and don't have to
   recompile everything as you add to, or change, PHP. Building PHP into
   apache (static method) means that PHP will load and run faster. For
   more information, see the Apache webpage on DSO support.

     Note: Apache's default httpd.conf currently ships with a section
     that looks like this:

User nobody
Group "#-1"

     Unless you change that to "Group nogroup" or something like that
     ("Group daemon" is also very common) PHP will not be able to open
     files.

     Note: Make sure you specify the installed version of apxs when
     using --with-apxs=/path/to/apxs. You must NOT use the apxs version
     that is in the apache sources but the one that is actually
     installed on your system.
     _________________________________________________________________

Apache 2.0 on Unix systems

   This section contains notes and hints specific to Apache 2.0 installs
   of PHP on Unix systems.

   Warning

   We do not recommend using a threaded MPM in production with Apache2.
   Use the prefork MPM instead, or use Apache1. For information on why,
   read the related FAQ entry on using Apache2 with a threaded MPM

   You are highly encouraged to take a look at the Apache Documentation
   to get a basic understanding of the Apache 2.0 Server.

     PHP and Apache 2.0.x compatibility notes: The following versions of
     PHP are known to work with the most recent version of Apache 2.0.x:

     * PHP 4.3.0 or later available at http://www.php.net/downloads.php.
     * the latest stable development version. Get the source code
       http://snaps.php.net/php5-latest.tar.gz or download binaries for
       Windows http://snaps.php.net/win32/php5-win32-latest.zip.
     * a prerelease version downloadable from http://qa.php.net/.
     * you have always the option to obtain PHP through anonymous CVS.

     These versions of PHP are compatible to Apache 2.0.40 and later.

     Apache 2.0 SAPI-support started with PHP 4.2.0. PHP 4.2.3 works
     with Apache 2.0.39, don't use any other version of Apache with PHP
     4.2.3. However, the recommended setup is to use PHP 4.3.0 or later
     with the most recent version of Apache2.

     All mentioned versions of PHP will work still with Apache 1.3.x.

   Download the most recent version of Apache 2.0 and a fitting PHP
   version from the above mentioned places. This quick guide covers only
   the basics to get started with Apache 2.0 and PHP. For more
   information read the Apache Documentation. The version numbers have
   been omitted here, to ensure the instructions are not incorrect. You
   will need to replace the 'NN' here with the correct values from your
   files.

   Example 2-4. Installation Instructions (Apache 2 Shared Module
   Version)
1.  gzip -d httpd-2_0_NN.tar.gz
2.  tar xvf httpd-2_0_NN.tar
3.  gunzip php-NN.tar.gz
4.  tar -xvf php-NN.tar
5.  cd httpd-2_0_NN
6.  ./configure --enable-so
7.  make
8.  make install

    Now you have Apache 2.0.NN available under /usr/local/apache2,
    configured with loadable module support and the standard MPM prefork.
    To test the installation use your normal procedure for starting
    the Apache server, e.g.:
    /usr/local/apache2/bin/apachectl start
    and stop the server to go on with the configuration for PHP:
    /usr/local/apache2/bin/apachectl stop.

9.  cd ../php-NN

10. Now, configure your PHP.  This is where you customize your PHP
    with various options, like which extensions will be enabled.  Do a
    ./configure --help for a list of available options.  In our example
    we'll do a simple configure with Apache 2 and MySQL support.  Your
    path to apxs may differ, in fact, the binary may even be named apxs2 on
    your system.

      ./configure --with-apxs2=/usr/local/apache2/bin/apxs --with-mysql

11. make
12. make install

    If you decide to change your configure options after installation,
    you only need to repeat the last three steps. You only need to
    restart apache for the new module to take effect. A recompile of
    Apache is not needed.

    Note that unless told otherwise, 'make install' will also install PEAR,
    various PHP tools such as phpize, install the PHP CLI, and more.

13. Setup your php.ini

    cp php.ini-dist /usr/local/lib/php.ini

    You may edit your .ini file to set PHP options.  If you prefer having
    php.ini in another location, use --with-config-file-path=/some/path in
    step 10.

    If you instead choose php.ini-recommended, be certain to read the list
    of changes within, as they affect how PHP behaves.

14. Edit your httpd.conf to load the PHP module.  The path on the right hand
    side of the LoadModule statement must point to the path of the PHP
    module on your system.  The make install from above may have already
    added this for you, but be sure to check.

    For PHP 4:

      LoadModule php4_module modules/libphp4.so

    For PHP 5:

      LoadModule php5_module modules/libphp5.so

15. Tell Apache to parse certain extensions as PHP.  For example,
    let's have Apache parse the .php extension as PHP.  You could
    have any extension(s) parse as PHP by simply adding more, with
    each separated by a space.  We'll add .phtml to demonstrate.

      AddType application/x-httpd-php .php .phtml

    It's also common to setup the .phps extension to show highlighted PHP
    source, this can be done with:

      AddType application/x-httpd-php-source .phps

16. Use your normal procedure for starting the Apache server, e.g.:

      /usr/local/apache2/bin/apachectl start

   Following the steps above you will have a running Apache 2.0 with
   support for PHP as SAPI module. Of course there are many more
   configuration options available for both, Apache and PHP. For more
   information use ./configure --help in the corresponding source tree.
   In case you wish to build a multithreaded version of Apache 2.0 you
   must overwrite the standard MPM-Module prefork either with worker or
   perchild. To do so append to your configure line in step 6 above
   either the option --with-mpm=worker or --with-mpm=perchild. Take care
   about the consequences and understand what you are doing. For more
   information read the Apache documentation about the MPM-Modules.

     Note: If you want to use content negotiation, read the Apache
     MultiViews FAQ.

     Note: To build a multithreaded version of Apache your system must
     support threads. This also implies to build PHP with experimental
     Zend Thread Safety (ZTS). Therefore not all extensions might be
     available. The recommended setup is to build Apache with the
     standard prefork MPM-Module.
     _________________________________________________________________

Caudium

   PHP 4 can be built as a Pike module for the Caudium webserver. Note
   that this is not supported with PHP 3. Follow the simple instructions
   below to install PHP 4 for Caudium.

   Example 2-5. Caudium Installation Instructions
1.  Make sure you have Caudium installed prior to attempting to
    install PHP 4. For PHP 4 to work correctly, you will need Pike
    7.0.268 or newer. For the sake of this example we assume that
    Caudium is installed in /opt/caudium/server/.
2.  Change directory to php-x.y.z (where x.y.z is the version number).
3.  ./configure --with-caudium=/opt/caudium/server
4.  make
5.  make install
6.  Restart Caudium if it's currently running.
7.  Log into the graphical configuration interface and go to the
    virtual server where you want to add PHP 4 support.
8.  Click Add Module and locate and then add the PHP 4 Script Support module.
9.  If the documentation says that the 'PHP 4 interpreter isn't
    available', make sure that you restarted the server. If you did
    check /opt/caudium/logs/debug/default.1 for any errors related to
    <filename>PHP4.so</filename>. Also make sure that
    <filename>caudium/server/lib/[pike-version]/PHP4.so</filename>
    is present.
10. Configure the PHP Script Support module if needed.

   You can of course compile your Caudium module with support for the
   various extensions available in PHP 4. See the reference pages for
   extension specific configure options.

     Note: When compiling PHP 4 with MySQL support you must make sure
     that the normal MySQL client code is used. Otherwise there might be
     conflicts if your Pike already has MySQL support. You do this by
     specifying a MySQL install directory the --with-mysql option.
     _________________________________________________________________

fhttpd related notes

   To build PHP as an fhttpd module, answer "yes" to "Build as an fhttpd
   module?" (the --with-fhttpd=DIR option to configure) and specify the
   fhttpd source base directory. The default directory is
   /usr/local/src/fhttpd. If you are running fhttpd, building PHP as a
   module will give better performance, more control and remote execution
   capability.

     Note: Support for fhttpd is no longer available as of PHP 4.3.0.
     _________________________________________________________________

Sun, iPlanet and Netscape servers on Sun Solaris

   This section contains notes and hints specific to Sun Java System Web
   Server, Sun ONE Web Server, iPlanet and Netscape server installs of
   PHP on Sun Solaris.

   From PHP 4.3.3 on you can use PHP scripts with the NSAPI module to
   generate custom directory listings and error pages. Additional
   functions for Apache compatibility are also available. For support in
   current webservers read the note about subrequests.

   You can find more information about setting up PHP for the Netscape
   Enterprise Server (NES) here:
   http://benoit.noss.free.fr/php/install-php4.html

   To build PHP with Sun JSWS/Sun ONE WS/iPlanet/Netscape webservers,
   enter the proper install directory for the --with-nsapi=[DIR] option.
   The default directory is usually /opt/netscape/suitespot/. Please also
   read /php-xxx-version/sapi/nsapi/nsapi-readme.txt.

    1. Install the following packages from http://www.sunfreeware.com/ or
       another download site:

       autoconf-2.13
       automake-1.4
       bison-1_25-sol26-sparc-local
       flex-2_5_4a-sol26-sparc-local
       gcc-2_95_2-sol26-sparc-local
       gzip-1.2.4-sol26-sparc-local
       m4-1_4-sol26-sparc-local
       make-3_76_1-sol26-sparc-local
       mysql-3.23.24-beta (if you want mysql support)
       perl-5_005_03-sol26-sparc-local
       tar-1.13 (GNU tar)
    2. Make sure your path includes the proper directories
       PATH=.:/usr/local/bin:/usr/sbin:/usr/bin:/usr/ccs/bin and make it
       available to your system export PATH.
    3. gunzip php-x.x.x.tar.gz (if you have a .gz dist, otherwise go to
       4).
    4. tar xvf php-x.x.x.tar
    5. Change to your extracted PHP directory: cd ../php-x.x.x
    6. For the following step, make sure /opt/netscape/suitespot/ is
       where your netscape server is installed. Otherwise, change to the
       correct path and run:

./configure --with-mysql=/usr/local/mysql \
--with-nsapi=/opt/netscape/suitespot/ \
--enable-libgcc

    7. Run make followed by make install.

   After performing the base install and reading the appropriate readme
   file, you may need to perform some additional configuration steps.

   Configuration Instructions for Sun/iPlanet/Netscape. Firstly you may
   need to add some paths to the LD_LIBRARY_PATH environment for the
   server to find all the shared libs. This can best done in the start
   script for your webserver. The start script is often located in:
   /path/to/server/https-servername/start. You may also need to edit the
   configuration files that are located in:
   /path/to/server/https-servername/config/.

    1. Add the following line to mime.types (you can do that by the
       administration server):

type=magnus-internal/x-httpd-php exts=php

    2. Edit magnus.conf (for servers >= 6) or obj.conf (for servers < 6)
       and add the following, shlib will vary depending on your system,
       it will be something like /opt/netscape/suitespot/bin/libphp4.so.
       You should place the following lines after mime types init.

Init fn="load-modules" funcs="php4_init,php4_execute,php4_auth_trans" shlib="/o
pt/netscape/suitespot/bin/libphp4.so"
Init fn="php4_init" LateInit="yes" errorString="Failed to initialize PHP!" [php
_ini="/path/to/php.ini"]

       (PHP >= 4.3.3) The php_ini parameter is optional but with it you
       can place your php.ini in your webserver config directory.
    3. Configure the default object in obj.conf (for virtual server
       classes [version 6.0+] in their vserver.obj.conf):

<Object name="default">
.
.
.
.#NOTE this next line should happen after all 'ObjectType' and before all 'AddL
og' lines
Service fn="php4_execute" type="magnus-internal/x-httpd-php" [inikey=value inik
ey=value ...]
.
.
</Object>

       (PHP >= 4.3.3) As additional parameters you can add some special
       php.ini-values, for example you can set a
       docroot="/path/to/docroot" specific to the context php4_execute is
       called. For boolean ini-keys please use 0/1 as value, not
       "On","Off",... (this will not work correctly), e.g.
       zlib.output_compression=1 instead of zlib.output_compression="On"
    4. This is only needed if you want to configure a directory that only
       consists of PHP scripts (same like a cgi-bin directory):

<Object name="x-httpd-php">
ObjectType fn="force-type" type="magnus-internal/x-httpd-php"
Service fn=php4_execute [inikey=value inikey=value ...]
</Object>

       After that you can configure a directory in the Administration
       server and assign it the style x-httpd-php. All files in it will
       get executed as PHP. This is nice to hide PHP usage by renaming
       files to .html.
    5. Setup of authentication: PHP authentication cannot be used with
       any other authentication. ALL AUTHENTICATION IS PASSED TO YOUR PHP
       SCRIPT. To configure PHP Authentication for the entire server, add
       the following line to your default object:

<Object name="default">
AuthTrans fn=php4_auth_trans
.
.
.
</Object>

    6. To use PHP Authentication on a single directory, add the
       following:

<Object ppath="d:\path\to\authenticated\dir\*">
AuthTrans fn=php4_auth_trans
</Object>

     Note: The stacksize that PHP uses depends on the configuration of
     the webserver. If you get crashes with very large PHP scripts, it
     is recommended to raise it with the Admin Server (in the section
     "MAGNUS EDITOR").
     _________________________________________________________________

CGI environment and recommended modifications in php.ini

   Important when writing PHP scripts is the fact that Sun JSWS/Sun ONE
   WS/iPlanet/Netscape is a multithreaded web server. Because of that all
   requests are running in the same process space (the space of the
   webserver itself) and this space has only one environment. If you want
   to get CGI variables like PATH_INFO, HTTP_HOST etc. it is not the
   correct way to try this in the old PHP 3.x way with getenv() or a
   similar way (register globals to environment, $_ENV). You would only
   get the environment of the running webserver without any valid CGI
   variables!

     Note: Why are there (invalid) CGI variables in the environment?

     Answer: This is because you started the webserver process from the
     admin server which runs the startup script of the webserver, you
     wanted to start, as a CGI script (a CGI script inside of the admin
     server!). This is why the environment of the started webserver has
     some CGI environment variables in it. You can test this by starting
     the webserver not from the administration server. Use the command
     line as root user and start it manually - you will see there are no
     CGI-like environment variables.

   Simply change your scripts to get CGI variables in the correct way for
   PHP 4.x by using the superglobal $_SERVER. If you have older scripts
   which use $HTTP_HOST, etc., you should turn on register_globals in
   php.ini and change the variable order too (important: remove "E" from
   it, because you do not need the environment here):
variables_order = "GPCS"
register_globals = On
     _________________________________________________________________

Special use for error pages or self-made directory listings (PHP >= 4.3.3)

   You can use PHP to generate the error pages for "404 Not Found" or
   similar. Add the following line to the object in obj.conf for every
   error page you want to overwrite:
Error fn="php4_execute" code=XXX script="/path/to/script.php" [inikey=value ini
key=value...]

   where XXX is the HTTP error code. Please delete any other Error
   directives which could interfere with yours. If you want to place a
   page for all errors that could exist, leave the code parameter out.
   Your script can get the HTTP status code with $_SERVER['ERROR_TYPE'].

   Another possibility is to generate self-made directory listings. Just
   create a PHP script which displays a directory listing and replace the
   corresponding default Service line for
   type="magnus-internal/directory" in obj.conf with the following:
Service fn="php4_execute" type="magnus-internal/directory" script="/path/to/scr
ipt.php" [inikey=value inikey=value...]

   For both error and directory listing pages the original URI and
   translated URI are in the variables $_SERVER['PATH_INFO'] and
   $_SERVER['PATH_TRANSLATED'].
     _________________________________________________________________

Note about nsapi_virtual() and subrequests (PHP >= 4.3.3)

   The NSAPI module now supports the nsapi_virtual() function (alias:
   virtual()) to make subrequests on the webserver and insert the result
   in the webpage. This function uses some undocumented features from the
   NSAPI library. On Unix the module automatically looks for the needed
   functions and uses them if available. If not, nsapi_virtual() is
   disabled.

     Note: But be warned: Support for nsapi_virtual() is EXPERIMENTAL!!!
     _________________________________________________________________

CGI and commandline setups

   The default is to build PHP as a CGI program. This creates a
   commandline interpreter, which can be used for CGI processing, or for
   non-web-related PHP scripting. If you are running a web server PHP has
   module support for, you should generally go for that solution for
   performance reasons. However, the CGI version enables users to run
   different PHP-enabled pages under different user-ids.

   Warning

   By using the CGI setup, your server is open to several possible
   attacks. Please read our CGI security section to learn how to defend
   yourself from those attacks.

   As of PHP 4.3.0, some important additions have happened to PHP. A new
   SAPI named CLI also exists and it has the same name as the CGI binary.
   What is installed at {PREFIX}/bin/php depends on your configure line
   and this is described in detail in the manual section named Using PHP
   from the command line. For further details please read that section of
   the manual.
     _________________________________________________________________

Testing

   If you have built PHP as a CGI program, you may test your build by
   typing make test. It is always a good idea to test your build. This
   way you may catch a problem with PHP on your platform early instead of
   having to struggle with it later.
     _________________________________________________________________

Benchmarking

   If you have built PHP 3 as a CGI program, you may benchmark your build
   by typing make bench. Note that if safe mode is on by default, the
   benchmark may not be able to finish if it takes longer then the 30
   seconds allowed. This is because the set_time_limit() can not be used
   in safe mode. Use the max_execution_time configuration setting to
   control this time for your own scripts. make bench ignores the
   configuration file.

     Note: make bench is only available for PHP 3.
     _________________________________________________________________

Using Variables

   Some server supplied environment variables are not defined in the
   current CGI/1.1 specification. Only the following variables are
   defined there: AUTH_TYPE, CONTENT_LENGTH, CONTENT_TYPE,
   GATEWAY_INTERFACE, PATH_INFO, PATH_TRANSLATED, QUERY_STRING,
   REMOTE_ADDR, REMOTE_HOST, REMOTE_IDENT, REMOTE_USER, REQUEST_METHOD,
   SCRIPT_NAME, SERVER_NAME, SERVER_PORT, SERVER_PROTOCOL, and
   SERVER_SOFTWARE. Everything else should be treated as 'vendor
   extensions'.
     _________________________________________________________________

HP-UX specific installation notes

   This section contains notes and hints specific to installing PHP on
   HP-UX systems. (Contributed by paul_mckay at clearwater-it dot co dot
   uk).

     Note: These tips were written for PHP 4.0.4 and Apache 1.3.9.

    1. You need gzip, download a binary distribution from
       http://hpux.connect.org.uk/ftp/hpux/Gnu/gzip-1.2.4a/gzip-1.2.4a-sd
       -10.20.depot.Z uncompress the file and install using swinstall.
    2. You need gcc, download a binary distribution from
       http://gatekeep.cs.utah.edu/ftp/hpux/Gnu/gcc-2.95.2/gcc-2.95.2-sd-
       10.20.depot.gz. uncompress this file and install gcc using
       swinstall.
    3. You need the GNU binutils, you can download a binary distribution
       from
       http://hpux.connect.org.uk/ftp/hpux/Gnu/binutils-2.9.1/binutils-2.
       9.1-sd-10.20.depot.gz. uncompress this file and install binutils
       using swinstall.
    4. You now need bison, you can download a binary distribution from
       http://hpux.connect.org.uk/ftp/hpux/Gnu/bison-1.28/bison-1.28-sd-1
       0.20.depot.gz, install as above.
    5. You now need flex, you need to download the source from one of the
       http://www.gnu.org mirrors. It is in the non-gnu directory of the
       ftp site. Download the file, gunzip, then tar -xvf it. Go into the
       newly created flex directory and run ./configure, followed by
       make, and then make install.
       If you have errors here, it's probably because gcc etc. are not in
       your PATH so add them to your PATH.
    6. Download the PHP and apache sources.
    7. gunzip and tar -xvf them. We need to hack a couple of files so
       that they can compile OK.
    8. Firstly the configure file needs to be hacked because it seems to
       lose track of the fact that you are a hpux machine, there will be
       a better way of doing this but a cheap and cheerful hack is to put
       lt_target=hpux10.20 on line 47286 of the configure script.
    9. Next, the Apache GuessOS file needs to be hacked. Under
       apache_1.3.9/src/helpers change line 89 from echo
       "hp${HPUXMACH}-hpux${HPUXVER}"; exit 0 to: echo
       "hp${HPUXMACH}-hp-hpux${HPUXVER}"; exit 0
   10. You cannot install PHP as a shared object under HP-UX so you must
       compile it as a static, just follow the instructions at the Apache
       page.
   11. PHP and Apache should have compiled OK, but Apache won't start.
       you need to create a new user for Apache, e.g. www, or apache. You
       then change lines 252 and 253 of the conf/httpd.conf in Apache so
       that instead of

User nobody
Group nogroup

       you have something like

User www
Group sys

       This is because you can't run Apache as nobody under hp-ux. Apache
       and PHP should then work.
     _________________________________________________________________

OpenBSD installation notes

   This section contains notes and hints specific to installing PHP on
   OpenBSD 3.6.
     _________________________________________________________________

Using Binary Packages

   Using binary packages to install PHP on OpenBSD is the recommended and
   simplest method. The core package has been separated from the various
   modules, and each can be installed and removed independently from the
   others. The files you need can be found on your OpenBSD CD or on the
   FTP site.

   The main package you need to install is php4-core-4.3.8.tgz, which
   contains the basic engine (plus gettext and iconv). Next, take a look
   at the module packages, such as php4-mysql-4.3.8.tgz or
   php4-imap-4.3.8.tgz. You need to use the phpxs command to activate and
   deactivate these modules in your php.ini.

   Example 2-6. OpenBSD Package Install Example
# pkg_add php4-core-4.3.8.tgz
# /usr/local/sbin/phpxs -s
# cp /usr/local/share/doc/php4/php.ini-recommended /var/www/conf/php.ini
  (add in mysql)
# pkg_add php4-mysql-4.3.8.tgz
# /usr/local/sbin/phpxs -a mysql
  (add in imap)
# pkg_add php4-imap-4.3.8.tgz
# /usr/local/sbin/phpxs -a imap
  (remove mysql as a test)
# pkg_delete php4-mysql-4.3.8
# /usr/local/sbin/phpxs -r mysql
  (install the PEAR libraries)
# pkg_add php4-pear-4.3.8.tgz

   Read the packages(7) manual page for more information about binary
   packages on OpenBSD.
     _________________________________________________________________

Using Ports

   You can also compile up PHP from source using the ports tree. However,
   this is only recommended for users familiar with OpenBSD. The PHP 4
   port is split into two sub-directories: core and extensions. The
   extensions directory generates sub-packages for all of the supported
   PHP modules. If you find you do not want to create some of these
   modules, use the no_* FLAVOR. For example, to skip building the imap
   module, set the FLAVOR to no_imap.
     _________________________________________________________________

Common Problems

     * The default install of Apache runs inside a chroot(2) jail, which
       will restrict PHP scripts to accessing files under /var/www. You
       will therefore need to create a /var/www/tmp directory for PHP
       session files to be stored, or use an alternative session backend.
       In addition, database sockets need to be placed inside the jail or
       listen on the localhost interface. If you use network functions,
       some files from /etc such as /etc/resolv.conf and /etc/services
       will need to be moved into /var/www/etc. The OpenBSD PEAR package
       automatically installs into the correct chroot directories, so no
       special modification is needed there. More information on the
       OpenBSD Apache is available in the OpenBSD FAQ.
     * The OpenBSD 3.6 package for the gd extension requires XFree86 to
       be installed. If you do not wish to use some of the font features
       that require X11, install the php4-gd-4.3.8-no_x11.tgz package
       instead.
     _________________________________________________________________

Older Releases

   Older releases of OpenBSD used the FLAVORS system to compile up a
   statically linked PHP. Since it is hard to generate binary packages
   using this method, it is now deprecated. You can still use the old
   stable ports trees if you wish, but they are unsupported by the
   OpenBSD team. If you have any comments about this, the current
   maintainer for the port is Anil Madhavapeddy (avsm at openbsd dot
   org).
     _________________________________________________________________

Solaris specific installation tips

   This section contains notes and hints specific to installing PHP on
   Solaris systems.
     _________________________________________________________________

Required software

   Solaris installs often lack C compilers and their related tools. Read
   this FAQ for information on why using GNU versions for some of these
   tools is necessary. The required software is as follows:

     * gcc (recommended, other C compilers may work)
     * make
     * flex
     * bison
     * m4
     * autoconf
     * automake
     * perl
     * gzip
     * tar
     * GNU sed

   In addition, you will need to install (and possibly compile) any
   additional software specific to your configuration, such as Oracle or
   MySQL.
     _________________________________________________________________

Using Packages

   You can simplify the Solaris install process by using pkgadd to
   install most of your needed components.
     _________________________________________________________________

Debian GNU/Linux installation notes

   This section contains notes and hints specific to installing PHP on
   Debian GNU/Linux.
     _________________________________________________________________

Using APT

   While you can just download the PHP source and compile it yourself,
   using Debian's packaging system is the simplest and cleanest method of
   installing PHP. If you are not familiar with building software on
   Linux, this is the way to go.

   The first decision you need to make is whether you want to install
   Apache 1.3.x or Apache 2.x. The corresponding PHP packages are
   respectively named libapache-mod-php* and libapache2-mod-php*. The
   steps given below will use Apache 1.3.x. Please note that, as of this
   writing, there is no official Debian packages of PHP 5. Then the steps
   given below will install PHP 4.

   PHP is available in Debian as CGI or CLI flavour too, named
   respectively php4-cgi and php4-cli. If you need them, you'll just have
   to reproduce the following steps with the good package names. Another
   special package you'd want to install is php4-pear. It contains a
   minimal PEAR installation and the pear commandline utility.

   If you need more recent packages of PHP than the Debian's stable ones
   or if some PHP modules lacks the Debian official repository, perhaps
   you should take a look at http://www.apt-get.org/. One of the results
   found should be Dotdeb. This unofficial repository is maintained by
   Guillaume Plessis and contains Debian packages of the most recent
   versions of PHP 4 and PHP 5. To use it, just add the to following two
   lines to your /etc/apt/sources.lists and run apt-get update :

   Example 2-7. The two Dotdeb related lines
deb http://packages.dotdeb.org stable all
deb-src http://packages.dotdeb.org stable all

   The last thing to consider is whether your list of packages is up to
   date. If you have not updated it recently, you need to run apt-get
   update before anything else. This way, you will be using the most
   recent stable version of the Apache and PHP packages.

   Now that everything is in place, you can use the following example to
   install Apache and PHP:

   Example 2-8. Debian Install Example with Apache 1.3
   # apt-get install libapache-mod-php4

   APT will automatically install the PHP 4 module for Apache 1.3, and
   all its dependencies and then activate it. If you're not asked to
   restart Apache during the install process, you'll have to do it
   manually :

   Example 2-9. Stopping and starting Apache once PHP 4 is installed
# /etc/init.d/apache stop
# /etc/init.d/apache start
     _________________________________________________________________

Better control on configuration

   In the last section, PHP was installed with only core modules. This
   may not be what you want and you will soon discover that you need more
   activated modules, like MySQL, cURL, GD, etc.

   When you compile PHP from source yourself, you need to activate
   modules via the configure command. With APT, you just have to install
   additional packages. They're all named 'php4-*' (or 'php5-*' if you
   installed PHP 5 from a third party repository).

   Example 2-10. Getting the list of PHP additional packages
   # dpkg -l 'php4-*'

   As you can see from the last output, there's a lot of PHP modules that
   you can install (excluding the php4-cgi, php4-cli or php4-pear special
   packages). Look at them closely and choose what you need. If you
   choose a module and you do not have the proper libraries, APT will
   automatically install all the dependencies for you.

   If you choose to add the MySQL, cURL and GD support to PHP the command
   will look something like this:

   Example 2-11. Install PHP with MySQL, cURL and GD
   # apt-get install php4-mysql php4-curl php4-gd

   APT will automatically add the appropriate lines to your different
   php.ini (/etc/php4/apache/php.ini, /etc/php4/cgi/php.ini, etc).

   Example 2-12. These lines activate MySQL, cURL and GD into PHP
extension=mysql.so
extension=curl.so
extension=gd.so

   You'll only have to stop/start Apache as previously to activate the
   modules.
     _________________________________________________________________

Common Problems

     * If you see the PHP source instead of the result the script should
       produce, APT has probably not included /etc/apache/conf.d/php4 in
       your Apache 1.3 configuration. Please ensure that the following
       line is present in your /etc/apache/httpd.conf file then
       stop/start Apache:

   Example 2-13. This line activates PHP 4 into Apache
# Include /etc/apache/conf.d/

     * If you installed an additional module and if its functions are not
       available in your scripts, please ensure that the appropriate line
       is present in your php.ini, as seen before. APT may fail during
       the installation of the additional module, due to a confusing
       debconf configuration.
     _________________________________________________________________

Chapter 3. Installation on Mac OS X

   This section contains notes and hints specific to installing PHP on
   Mac OS X. There are two slightly different versions of Mac OS X,
   Client and Server, our manual deals with installing PHP on both
   systems. Note that PHP is not available for MacOS 9 and earlier
   versions.
     _________________________________________________________________

Using Packages

   There are a few pre-packaged and pre-compiled versions of PHP for Mac
   OS X. This can help in setting up a standard configuration, but if you
   need to have a different set of features (such as a secure server, or
   a different database driver), you may need to build PHP and/or your
   web server yourself. If you are unfamiliar with building and compiling
   your own software, it's worth checking whether somebody has already
   built a packaged version of PHP with the features you need.
     _________________________________________________________________

Compiling for OS X Server

   Mac OS X Server install.

    1. Get the latest distributions of Apache and PHP.
    2. Untar them, and run the configure program on Apache like so.

./configure --exec-prefix=/usr \
--localstatedir=/var \
--mandir=/usr/share/man \
--libexecdir=/System/Library/Apache/Modules \
--iconsdir=/System/Library/Apache/Icons \
--includedir=/System/Library/Frameworks/Apache.framework/Versions/1.3/Headers \
--enable-shared=max \
--enable-module=most \
--target=apache

    3. If you want the compiler to do some optimization, you may also
       want to add this line:

setenv OPTIM=-O2

    4. Next, go to the PHP 4 source directory and configure it.

./configure --prefix=/usr \
    --sysconfdir=/etc \
    --localstatedir=/var \
    --mandir=/usr/share/man \
    --with-xml \
    --with-apache=/src/apache_1.3.12

       If you have any other additions (MySQL, GD, etc.), be sure to add
       them here. For the --with-apache string, put in the path to your
       apache source directory, for example /src/apache_1.3.12.
    5. Type make and make install. This will add a directory to your
       Apache source directory under src/modules/php4.
    6. Now, reconfigure Apache to build in PHP 4.

./configure --exec-prefix=/usr \
--localstatedir=/var \
--mandir=/usr/share/man \
--libexecdir=/System/Library/Apache/Modules \
--iconsdir=/System/Library/Apache/Icons \
--includedir=/System/Library/Frameworks/Apache.framework/Versions/1.3/Headers \
--enable-shared=max \
--enable-module=most \
--target=apache \
--activate-module=src/modules/php4/libphp4.a

       You may get a message telling you that libmodphp4.a is out of
       date. If so, go to the src/modules/php4 directory inside your
       Apache source directory and run this command: ranlib libmodphp4.a.
       Then go back to the root of the Apache source directory and run
       the above configure command again. That'll bring the link table up
       to date. Run make and make install again.
    7. Copy and rename the php.ini-dist file to your bin directory from
       your PHP 4 source directory: cp php.ini-dist
       /usr/local/bin/php.ini or (if your don't have a local directory)
       cp php.ini-dist /usr/bin/php.ini.
     _________________________________________________________________

Compiling for MacOS X Client

   The following instructions will help you install a PHP module for the
   Apache web server included in MacOS X. This version includes support
   for the MySQL and PostgreSQL databases. These instructions are
   graciously provided by Marc Liyanage.

   Warning

   Be careful when you do this, you could screw up your Apache web
   server!

   Do this to install:

    1. Open a terminal window.
    2. Type wget
       http://www.diax.ch/users/liyanage/software/macosx/libphp4.so.gz,
       wait for the download to finish.
    3. Type gunzip libphp4.so.gz.
    4. Type sudo apxs -i -a -n php4 libphp4.so
    5. Now type sudo open -a TextEdit /etc/httpd/httpd.conf. TextEdit
       will open with the web server configuration file. Locate these two
       lines towards the end of the file: (Use the Find command)

#AddType application/x-httpd-php .php
#AddType application/x-httpd-php-source .phps

       Remove the two hash marks (#), then save the file and quit
       TextEdit.
    6. Finally, type sudo apachectl graceful to restart the web server.

   PHP should now be up and running. You can test it by dropping a file
   into your Sites folder which is called test.php. Into that file, write
   this line: <?php phpinfo() ?>.

   Now open up 127.0.0.1/~your_username/test.php in your web browser. You
   should see a status table with information about the PHP module.
     _________________________________________________________________

Chapter 4. Installation of PECL extensions

Introduction to PECL Installations

   PECL is a repository of PHP extensions that are made available to you
   via the PEAR packaging system. This section of the manual is intended
   to demonstrate how to obtain and install PECL extensions.

   These instructions assume /your/phpsrcdir/ is the path to the PHP
   source distribution, and that extname is the name of the PECL
   extension. Adjust accordingly. These instructions also assume a
   familiarity with the pear command.

   To be useful, a shared extension must be built, installed, and loaded.
   The methods described below provide you with various instructions on
   how to build and install the extensions, but they do not automatically
   load them. Extensions can be loaded by adding an extension directive.
   To this php.ini file, or through the use of the dl() function.

   When building PHP modules, it's important to have known-good versions
   of the required tools (autoconf, automake, libtool, etc.) See the
   Anonymous CVS Instructions for details on the required tools, and
   required versions.
     _________________________________________________________________

Downloading PECL extensions

   There are several options for downloading PECL extensions, such as:

     * http://pecl.php.net
       The PECL web site contains information about the different
       extensions that are offered by the PHP Development Team. The
       information available here includes: ChangeLog, release notes,
       requirements and other similar details.
     * pear download extname
       PECL extensions that have releases listed on the PECL web site are
       available for download and installation using the pear command.
       Specific revisions may also be specified.
     * CVS
       Most PECL extensions also reside in CVS. A web-based view may be
       seen at http://cvs.php.net/pecl/. To download straight from CVS,
       the following sequence of commands may be used. Note that phpfi is
       the password for user cvsread:

$ cvs -d:pserver:cvsread@cvs.php.net:/repository login
$ cvs -d:pserver:cvsread@cvs.php.net:/repository co pecl/extname

     * Windows downloads
       Windows users may find compiled PECL binaries by downloading the
       Collection of PECL modules from the PHP Downloads page, and by
       retrieving a PECL Snapshot. To compile PHP under Windows, read the
       appropriate chapter.
     _________________________________________________________________

PECL for Windows users

   As with any other PHP extension DLL, installation is as simple as
   copying the PECL extension DLLs into the extension_dir folder and
   loading them from php.ini. For example, add the following line to your
   php.ini:

   extension=php_extname.dll

   After doing this, restart the web server.
     _________________________________________________________________

Compiling shared PECL extensions with PEAR

   PEAR makes it easy to create shared PHP extensions. Using the pear
   command, do the following:

   $ pear install extname

   This will download the source for extname, compile, and install
   extname.so into your extension_dir. extname.so may then be loaded via
   php.ini

   By default, the pear command will not install packages that are marked
   with the alpha or beta state. If no stable packages are available, you
   may install a beta package using the following command:

   $ pear install extname-beta

   You may also install a specific version using this variant:

   $ pear install extname-0.1
     _________________________________________________________________

Compiling shared PECL extensions with phpize

   Sometimes, using the pear installer is not an option. This could be
   because you're behind a firewall, or it could be because the extension
   you want to install is not available as a PEAR compatible package,
   such as unreleased extensions from CVS. If you need to build such an
   extension, you can use the lower-level build tools to perform the
   build manually.

   The phpize command is used to prepare the build environment for a PHP
   extension. In the following sample, the sources for an extension are
   in a directory named extname:

$ cd extname
$ phpize
$ ./configure
$ make
# make install

   A successful install will have created extname.so and put it into the
   PHP extensions directory. You'll need to and adjust php.ini and add an
   extension=extname.so line before you can use the extension.

   If the system is missing the phpize command, and precompiled packages
   (like RPM's) are used, be sure to also install the appropriate devel
   version of the PHP package as they often include the phpize command
   along with the appropriate header files to build PHP and its
   extensions.

   Execute phpize --help to display additional usage information.
     _________________________________________________________________

Compiling PECL extensions statically into PHP

   You might find that you need to build a PECL extension statically into
   your PHP binary. To do this, you'll need to place the extension source
   under the php-src/ext/ directory and tell the PHP build system to
   regenerate its configure script.

$ cd /your/phpsrcdir/ext
$ pear download extname
$ gzip -d < extname.tgz | tar -xvf -
$ mv extname-x.x.x extname

   This will result in the following directory:

   /your/phpsrcdir/ext/extname

   From here, force PHP to rebuild the configure script, and then build
   PHP as normal:

$ cd /your/phpsrcdir
$ rm configure
$ ./buildconf --force
$ ./configure --help
$ ./configure --with-extname --enable-someotherext --with-foobar
$ make
$ make install

     Note: To run the 'buildconf' script you need autoconf 2.13 and
     automake 1.4+ (newer versions of autoconf may work, but are not
     supported).

   Whether --enable-extname or --with-extname is used depends on the
   extension. Typically an extension that does not require external
   libraries uses --enable. To be sure, run the following after
   buildconf:

   $ ./configure --help | grep extname
     _________________________________________________________________

Chapter 5. Problems?

Read the FAQ

   Some problems are more common than others. The most common ones are
   listed in the PHP FAQ, part of this manual.
     _________________________________________________________________

Other problems

   If you are still stuck, someone on the PHP installation mailing list
   may be able to help you. You should check out the archive first, in
   case someone already answered someone else who had the same problem as
   you. The archives are available from the support page on
   http://www.php.net/support.php. To subscribe to the PHP installation
   mailing list, send an empty mail to
   php-install-subscribe@lists.php.net. The mailing list address is
   php-install@lists.php.net.

   If you want to get help on the mailing list, please try to be precise
   and give the necessary details about your environment (which operating
   system, what PHP version, what web server, if you are running PHP as
   CGI or a server module, safe mode, etc...), and preferably enough code
   to make others able to reproduce and test your problem.
     _________________________________________________________________

Bug reports

   If you think you have found a bug in PHP, please report it. The PHP
   developers probably don't know about it, and unless you report it,
   chances are it won't be fixed. You can report bugs using the
   bug-tracking system at http://bugs.php.net/. Please do not send bug
   reports in mailing list or personal letters. The bug system is also
   suitable to submit feature requests.

   Read the How to report a bug document before submitting any bug
   reports!
     _________________________________________________________________

Chapter 6. Runtime Configuration

The configuration file

   The configuration file (called php3.ini in PHP 3, and simply php.ini
   as of PHP 4) is read when PHP starts up. For the server module
   versions of PHP, this happens only once when the web server is
   started. For the CGI and CLI version, it happens on every invocation.

   php.ini is searched in these locations (in order):

     * SAPI module specific location (PHPIniDir directive in Apache 2, -c
       command line option in CGI and CLI, php_ini parameter in NSAPI,
       PHP_INI_PATH environment variable in THTTPD)
     * The PHPRC environment variable. Before PHP 5.2.0 this was checked
       after the registry key mentioned below.
     * HKEY_LOCAL_MACHINE\SOFTWARE\PHP\IniFilePath (Windows Registry
       location)
     * Current working directory (for CLI)
     * The web server's directory (for SAPI modules), or directory of PHP
       (otherwise in Windows)
     * Windows directory (C:\windows or C:\winnt) (for Windows), or
       --with-config-file-path compile time option

   If php-SAPI.ini exists (where SAPI is used SAPI, so the filename is
   e.g. php-cli.ini or php-apache.ini), it's used instead of php.ini.
   SAPI name can be determined by php_sapi_name().

     Note: The Apache web server changes the directory to root at
     startup causing PHP to attempt to read php.ini from the root
     filesystem if it exists.

   The php.ini directives handled by extensions are documented
   respectively on the pages of the extensions themselves. The list of
   the core directives is available in the appendix. Probably not all PHP
   directives are documented in the manual though. For a complete list of
   directives available in your PHP version, please read your well
   commented php.ini file. Alternatively, you may find the the latest
   php.ini from CVS helpful too.

   Example 6-1. php.ini example
; any text on a line after an unquoted semicolon (;) is ignored
[php] ; section markers (text within square brackets) are also ignored
; Boolean values can be set to either:
;    true, on, yes
; or false, off, no, none
register_globals = off
track_errors = yes

; you can enclose strings in double-quotes
include_path = ".:/usr/local/lib/php"

; backslashes are treated the same as any other character
include_path = ".;c:\php\lib"

   Since PHP 5.1.0, it is possible to refer to existing .ini variables
   from within .ini files. Example: open_basedir = ${open_basedir}
   ":/new/dir".
     _________________________________________________________________

How to change configuration settings

Running PHP as an Apache module

   When using PHP as an Apache module, you can also change the
   configuration settings using directives in Apache configuration files
   (e.g. httpd.conf) and .htaccess files. You will need "AllowOverride
   Options" or "AllowOverride All" privileges to do so.

   With PHP 4 and PHP 5, there are several Apache directives that allow
   you to change the PHP configuration from within the Apache
   configuration files. For a listing of which directives are
   PHP_INI_ALL, PHP_INI_PERDIR, or PHP_INI_SYSTEM, have a look at the
   List of php.ini directives appendix.

     Note: With PHP 3, there are Apache directives that correspond to
     each configuration setting in the php3.ini name, except the name is
     prefixed by "php3_".

   php_value name value
          Sets the value of the specified directive. Can be used only
          with PHP_INI_ALL and PHP_INI_PERDIR type directives. To clear a
          previously set value use none as the value.

     Note: Don't use php_value to set boolean values. php_flag (see
     below) should be used instead.

   php_flag name on|off
          Used to set a boolean configuration directive. Can be used only
          with PHP_INI_ALL and PHP_INI_PERDIR type directives.

   php_admin_value name value
          Sets the value of the specified directive. This can not be used
          in .htaccess files. Any directive type set with php_admin_value
          can not be overridden by .htaccess or virtualhost directives.
          To clear a previously set value use none as the value.

   php_admin_flag name on|off
          Used to set a boolean configuration directive. This can not be
          used in .htaccess files. Any directive type set with
          php_admin_flag can not be overridden by .htaccess or
          virtualhost directives.

   Example 6-2. Apache configuration example
<IfModule mod_php5.c>
  php_value include_path ".:/usr/local/lib/php"
  php_admin_flag safe_mode on
</IfModule>
<IfModule mod_php4.c>
  php_value include_path ".:/usr/local/lib/php"
  php_admin_flag safe_mode on
</IfModule>
<IfModule mod_php3.c>
  php3_include_path ".:/usr/local/lib/php"
  php3_safe_mode on
</IfModule>

   Caution

   PHP constants do not exist outside of PHP. For example, in httpd.conf
   you can not use PHP constants such as E_ALL or E_NOTICE to set the
   error_reporting directive as they will have no meaning and will
   evaluate to 0. Use the associated bitmask values instead. These
   constants can be used in php.ini
     _________________________________________________________________

Changing PHP configuration via the Windows registry

   When running PHP on Windows, the configuration values can be modified
   on a per-directory basis using the Windows registry. The configuration
   values are stored in the registry key HKLM\SOFTWARE\PHP\Per Directory
   Values, in the sub-keys corresponding to the path names. For example,
   configuration values for the directory c:\inetpub\wwwroot would be
   stored in the key HKLM\SOFTWARE\PHP\Per Directory
   Values\c\inetpub\wwwroot. The settings for the directory would be
   active for any script running from this directory or any subdirectory
   of it. The values under the key should have the name of the PHP
   configuration directive and the string value. PHP constants in the
   values are not parsed. However, only configuration values changeable
   in PHP_INI_USER can be set this way, PHP_INI_PERDIR values can not.
     _________________________________________________________________

Other interfaces to PHP

   Regardless of how you run PHP, you can change certain values at
   runtime of your scripts through ini_set(). See the documentation on
   the ini_set() page for more information.

   If you are interested in a complete list of configuration settings on
   your system with their current values, you can execute the phpinfo()
   function, and review the resulting page. You can also access the
   values of individual configuration directives at runtime using
   ini_get() or get_cfg_var().
     _________________________________________________________________

Chapter 7. Installation FAQ

   This section holds common questions about the way to install PHP. PHP
   is available for almost any OS (except maybe for MacOS before OSX),
   and almost any web server.

   To install PHP, follow the instructions in Installing PHP.

   1. Why shouldn't I use Apache2 with a threaded MPM in a production
          environment?

   2. Unix/Windows: Where should my php.ini file be located?
   3. Unix: I installed PHP, but every time I load a document, I get the
          message 'Document Contains No Data'! What's going on here?

   4. Unix: I installed PHP using RPMS, but Apache isn't processing the
          PHP pages! What's going on here?

   5. Unix: I installed PHP 3 using RPMS, but it doesn't compile with the
          database support I need! What's going on here?

   6. Unix: I patched Apache with the FrontPage extensions patch, and
          suddenly PHP stopped working. Is PHP incompatible with the
          Apache FrontPage extensions?

   7. Unix/Windows: I have installed PHP, but when I try to access a PHP
          script file via my browser, I get a blank screen.

   8. Unix/Windows: I have installed PHP, but when try to access a PHP
          script file via my browser, I get a server 500 error.

   9. Some operating systems: I have installed PHP without errors, but
          when I try to start apache I get undefined symbol errors:

[mybox:user /src/php4] root# apachectl configtest
 apachectl: /usr/local/apache/bin/httpd Undefined symbols:
  _compress
  _uncompress

   10. Windows: I have installed PHP, but when I to access a PHP script
          file via my browser, I get the error:

cgi error:
 The specified CGI application misbehaved by not
 returning a complete set of HTTP headers.
 The headers it did return are:

   11. Windows: I've followed all the instructions, but still can't get
          PHP and IIS to work together!

   12. When running PHP as CGI with IIS, PWS, OmniHTTPD or Xitami, I get
          the following error: Security Alert! PHP CGI cannot be accessed
          directly..

   13. How do I know if my php.ini is being found and read? It seems like
          it isn't as my changes aren't being implemented.

   14. How do I add my PHP directory to the PATH on Windows?
   15. How do I make the php.ini file available to PHP on windows?
   16. Is it possible to use Apache content negotiation (MultiViews
          option) with PHP?

   17. Is PHP limited to process GET and POST request methods only?

   1. Why shouldn't I use Apache2 with a threaded MPM in a production
   environment?

   PHP is glue. It is the glue used to build cool web applications by
   sticking dozens of 3rd-party libraries together and making it all
   appear as one coherent entity through an intuitive and easy to learn
   language interface. The flexibility and power of PHP relies on the
   stability and robustness of the underlying platform. It needs a
   working OS, a working web server and working 3rd-party libraries to
   glue together. When any of these stop working PHP needs ways to
   identify the problems and fix them quickly. When you make the
   underlying framework more complex by not having completely separate
   execution threads, completely separate memory segments and a strong
   sandbox for each request to play in, feet of clay are introduced into
   PHP's system.

   If you feel you have to use a threaded MPM, look at a FastCGI
   configuration where PHP is running in its own memory space.

   And finally, this warning against using a threaded MPM is not as
   strong for Windows systems because most libraries on that platform
   tend to be threadsafe.

   2. Unix/Windows: Where should my php.ini file be located?

   By default on Unix it should be in /usr/local/lib which is
   <install-path>/lib. Most people will want to change this at
   compile-time with the --with-config-file-path flag. You would, for
   example, set it with something like:
   --with-config-file-path=/etc

   And then you would copy php.ini-dist from the distribution to
   /etc/php.ini and edit it to make any local changes you want.
   --with-config-file-scan-dir=PATH

   On Windows the default path for the php.ini file is the Windows
   directory. If you're using the Apache webserver, php.ini is first
   searched in the Apaches install directory, e.g. c:\program
   files\apache group\apache. This way you can have different php.ini
   files for different versions of Apache on the same machine.

   See also the chapter about the configuration file.

   3. Unix: I installed PHP, but every time I load a document, I get the
   message 'Document Contains No Data'! What's going on here?

   This probably means that PHP is having some sort of problem and is
   core-dumping. Look in your server error log to see if this is the
   case, and then try to reproduce the problem with a small test case. If
   you know how to use 'gdb', it is very helpful when you can provide a
   backtrace with your bug report to help the developers pinpoint the
   problem. If you are using PHP as an Apache module try something like:

     * Stop your httpd processes
     * gdb httpd
     * Stop your httpd processes
     * > run -X -f /path/to/httpd.conf
     * Then fetch the URL causing the problem with your browser
     * > run -X -f /path/to/httpd.conf
     * If you are getting a core dump, gdb should inform you of this now
     * type: bt
     * You should include your backtrace in your bug report. This should
       be submitted to http://bugs.php.net/

   If your script uses the regular expression functions (ereg() and
   friends), you should make sure that you compiled PHP and Apache with
   the same regular expression package. This should happen automatically
   with PHP and Apache 1.3.x

   4. Unix: I installed PHP using RPMS, but Apache isn't processing the
   PHP pages! What's going on here?

   Assuming you installed both Apache and PHP from RPM packages, you need
   to uncomment or add some or all of the following lines in your
   httpd.conf file:
# Extra Modules
AddModule mod_php.c
AddModule mod_php3.c
AddModule mod_perl.c

# Extra Modules
LoadModule php_module         modules/mod_php.so
LoadModule php3_module        modules/libphp3.so     # for PHP 3
LoadModule php4_module        modules/libphp4.so     # for PHP 4
LoadModule perl_module        modules/libperl.so

   And add:
AddType application/x-httpd-php3 .php3    # for PHP 3
AddType application/x-httpd-php .php      # for PHP 4

   ... to the global properties, or to the properties of the
   VirtualDomain you want to have PHP support added to.

   5. Unix: I installed PHP 3 using RPMS, but it doesn't compile with the
   database support I need! What's going on here?

   Due to the way PHP 3 built, it is not easy to build a complete
   flexible PHP RPM. This issue is addressed in PHP 4. For PHP 3, we
   currently suggest you use the mechanism described in the
   INSTALL.REDHAT file in the PHP distribution. If you insist on using an
   RPM version of PHP 3, read on...

   The RPM packagers are setting up the RPMS to install without database
   support to simplify installations and because RPMS use /usr/ instead
   of the standard /usr/local/ directory for files. You need to tell the
   RPM spec file which databases to support and the location of the
   top-level of your database server.

   This example will explain the process of adding support for the
   popular MySQL database server, using the mod installation for Apache.

   Of course all of this information can be adjusted for any database
   server that PHP supports. We will assume you installed MySQL and
   Apache completely with RPMS for this example as well.

     * First remove mod_php3 :

rpm -e mod_php3

     * Then get the source rpm and INSTALL it, NOT --rebuild

rpm -Uvh mod_php3-3.0.5-2.src.rpm

     * Then edit the /usr/src/redhat/SPECS/mod_php3.spec file
       In the %build section add the database support you want, and the
       path.
       For MySQL you would add --with-mysql=/usr The %build section will
       look something like this:

./configure --prefix=/usr \
--with-apxs=/usr/sbin/apxs \
--with-config-file-path=/usr/lib \
--enable-debug=no \
--enable-safe-mode \
--with-exec-dir=/usr/bin \
--with-mysql=/usr \
--with-system-regex

     * Once this modification is made then build the binary rpm as
       follows:

rpm -bb /usr/src/redhat/SPECS/mod_php3.spec

     * Then install the rpm

rpm -ivh /usr/src/redhat/RPMS/i386/mod_php3-3.0.5-2.i386.rpm

   Make sure you restart Apache, and you now have PHP 3 with MySQL
   support using RPM's. Note that it is probably much easier to just
   build from the distribution tarball of PHP 3 and follow the
   instructions in INSTALL.REDHAT found in that distribution.

   6. Unix: I patched Apache with the FrontPage extensions patch, and
   suddenly PHP stopped working. Is PHP incompatible with the Apache
   FrontPage extensions?

   No, PHP works fine with the FrontPage extensions. The problem is that
   the FrontPage patch modifies several Apache structures, that PHP
   relies on. Recompiling PHP (using 'make clean ; make') after the FP
   patch is applied would solve the problem.

   7. Unix/Windows: I have installed PHP, but when I try to access a PHP
   script file via my browser, I get a blank screen.

   Do a 'view source' in the web browser and you will probably find that
   you can see the source code of your PHP script. This means that the
   web server did not send the script to PHP for interpretation.
   Something is wrong with the server configuration - double check the
   server configuration against the PHP installation instructions.

   8. Unix/Windows: I have installed PHP, but when try to access a PHP
   script file via my browser, I get a server 500 error.

   Something went wrong when the server tried to run PHP. To get to see a
   sensible error message, from the command line, change to the directory
   containing the PHP executable (php.exe on Windows) and run php -i. If
   PHP has any problems running, then a suitable error message will be
   displayed which will give you a clue as to what needs to be done next.
   If you get a screen full of HTML codes (the output of the phpinfo()
   function) then PHP is working, and your problem may be related to your
   server configuration which you should double check.

   9. Some operating systems: I have installed PHP without errors, but
   when I try to start apache I get undefined symbol errors:
[mybox:user /src/php4] root# apachectl configtest
 apachectl: /usr/local/apache/bin/httpd Undefined symbols:
  _compress
  _uncompress

   This has actually nothing to do with PHP, but with the MySQL client
   libraries. Some need --with-zlib, others do not. This is also covered
   in the MySQL FAQ.

   10. Windows: I have installed PHP, but when I to access a PHP script
   file via my browser, I get the error:
cgi error:
 The specified CGI application misbehaved by not
 returning a complete set of HTTP headers.
 The headers it did return are:

   This error message means that PHP failed to output anything at all. To
   get to see a sensible error message, from the command line, change to
   the directory containing the PHP executable (php.exe on Windows) and
   run php -i. If PHP has any problems running, then a suitable error
   message will be displayed which will give you a clue as to what needs
   to be done next. If you get a screen full of HTML codes (the output of
   the phpinfo() function) then PHP is working.

   Once PHP is working at the command line, try accessing the script via
   the browser again. If it still fails then it could be one of the
   following:

     * File permissions on your PHP script, php.exe, php4ts.dll, php.ini
       or any PHP extensions you are trying to load are such that the
       anonymous internet user ISUR_<machinename> cannot access them.
     * The script file does not exist (or possibly isn't where you think
       it is relative to your web root directory). Note that for IIS you
       can trap this error by ticking the 'check file exists' box when
       setting up the script mappings in the Internet Services Manager.
       If a script file does not exist then the server will return a 404
       error instead. There is also the additional benefit that IIS will
       do any authentication required for you based on the NTLanMan
       permissions on your script file.

   11. Windows: I've followed all the instructions, but still can't get
   PHP and IIS to work together!

   Make sure any user who needs to run a PHP script has the rights to run
   php.exe! IIS uses an anonymous user which is added at the time IIS is
   installed. This user needs rights to php.exe. Also, any authenticated
   user will also need rights to execute php.exe. And for IIS4 you need
   to tell it that PHP is a script engine. Also, you will want to read
   this faq.

   12. When running PHP as CGI with IIS, PWS, OmniHTTPD or Xitami, I get
   the following error: Security Alert! PHP CGI cannot be accessed
   directly..

   You must set the cgi.force_redirect directive to 0. It defaults to 1
   so be sure the directive isn't commented out (with a ;). Like all
   directives, this is set in php.ini

   Because the default is 1, it's critical that you're 100% sure that the
   correct php.ini file is being read. Read this faq for details.

   13. How do I know if my php.ini is being found and read? It seems like
   it isn't as my changes aren't being implemented.

   To be sure your php.ini is being read by PHP, make a call to phpinfo()
   and near the top will be a listing called Configuration File
   (php.ini). This will tell you where PHP is looking for php.ini and
   whether or not it's being read. If just a directory PATH exists than
   it's not being read and you should put your php.ini in that directory.
   If php.ini is included within the PATH than it is being read.

   If php.ini is being read and you're running PHP as a module, then be
   sure to restart your web server after making changes to php.ini

   14. How do I add my PHP directory to the PATH on Windows?

   On Windows NT, 2000, XP and 2003:

     * Go to Control Panel and open the System icon (Start -> Settings ->
       Control Panel -> System, or just Start -> Control Panel -> System
       for Windows XP/2003)
     * Go to the Advanced tab
     * Click on the 'Environment Variables' button
     * Look into the 'System Variables' pane
     * Find the Path entry (you may need to scroll to find it)
     * Double click on the Path entry
     * Enter your PHP directory ant the end, including ';' before (e.g.
       ;C:\php)
     * Press OK and restart your computer

   On Windows 98/Me you need to edit the autoexec.bat file:

     * Open the Notepad (Start -> Run and enter notepad)
     * Open the C:\autoexec.bat file
     * Locate the line with PATH=C:\WINDOWS;C:\WINDOWS\COMMAND;..... and
       add: ;C:\php to the end of the line
     * Save the file and restart your computer

     Note: Be sure to reboot after following the steps above to ensure
     that the PATH changes are applied.

   The PHP manual used to promote the copying of files into the Windows
   system directory, this is because this directory (C:\Windows,
   C:\WINNT, etc.) is by default in the systems PATH. Copying files into
   the Windows system directory has long since been deprecated and may
   cause problems.

   15. How do I make the php.ini file available to PHP on windows?

   There are several ways of doing this. If you are using Apache, read
   their installation specific instructions (Apache 1, Apache 2),
   otherwise you must set the PHPRC environment variable:

   On Windows NT, 2000, XP and 2003:

     * Go to Control Panel and open the System icon (Start -> Settings ->
       Control Panel -> System, or just Start -> Control Panel -> System
       for Windows XP/2003)
     * Go to the Advanced tab
     * Click on the 'Environment Variables' button
     * Look into the 'System variables' pane
     * Click on 'New' and enter 'PHPRC' as the variable name and the
       directory where php.ini is located as the variable value (e.g.
       C:\php)
     * Press OK and restart your computer

   On Windows 98/Me you need to edit the autoexec.bat file:

     * Open the Notepad (Start -> Run and enter notepad)
     * Open the C:\autoexec.bat file
     * Add a new line to the end of the file: set PHPRC=C:\php (replace
       C:\php with the directory where php.ini is located). Please note
       that the path cannot contain spaces. For instance, if you have
       installed PHP in C:\Program Files\PHP, you would enter
       C:\PROGRA~1\PHP instead.
     * Save the file and restart your computer

   16. Is it possible to use Apache content negotiation (MultiViews
   option) with PHP?

   If links to PHP files include extension, everything works perfect.
   This FAQ is only for the case when links to PHP files don't include
   extension and you want to use content negotiation to choose PHP files
   from URL with no extension. In this case, replace the line AddType
   application/x-httpd-php .php with:
# PHP 4
AddHandler php-script php
AddType text/html php

# PHP 5
AddHandler php5-script php
AddType text/html php

   This solution doesn't work for Apache 1 as PHP module doesn't catch
   php-script.

   17. Is PHP limited to process GET and POST request methods only?

   No, it is possible to handle any request method, e.g. CONNECT. Proper
   response status can be sent with header(). If only GET and POST
   methods should be handled, it can be achieved with this Apache
   configuration:
<LimitExcept GET POST>
Deny from all
</LimitExcept>