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
|
--TEST--
Test fwrite() function : usage variations - r+, r+b & r+t modes
--SKIPIF--
<?php
if( substr(PHP_OS, 0, 3) == 'WIN' ) {
die('skip...Not valid for Windows');
}
?>
--FILE--
<?php
/*
Prototype: int fwrite ( resource $handle,string string, [, int $length] );
Description: fwrite() writes the contents of string to the file stream pointed to by handle.
If the length arquement is given,writing will stop after length bytes have been
written or the end of string reached, whichever comes first.
fwrite() returns the number of bytes written or FALSE on error
*/
echo "*** Testing fwrite() various operations ***\n";
// include the file.inc for Function: function delete_file($filename)
include ("file.inc");
/*
Test fwrite with file opened in mode : r+,r+b,r+t
File having content of type numeric, text,text_with_new_line & alphanumeric
*/
$file_modes = array("r+", "r+b", "r+t");
$file_content_types = array("numeric","text","text_with_new_line","alphanumeric");
foreach($file_content_types as $file_content_type) {
echo "\n-- Testing fwrite() with file having content of type ". $file_content_type ." --\n";
/* open the file using $files_modes and perform fwrite() on it */
foreach($file_modes as $file_mode) {
echo "-- Opening file in $file_mode --\n";
// create temp file and fill the data of type $file_content_type
$filename = dirname(__FILE__)."/fwrite_variation2.tmp"; // this is name of the file
create_files ( dirname(__FILE__), 1, $file_content_type, 0755, 1, "w", "fwrite_variation", 2);
$file_handle = fopen($filename, $file_mode);
if(!$file_handle) {
echo "Error: failed to fopen() file: $filename!";
exit();
}
$data_to_be_written="";
fill_buffer($data_to_be_written,$file_content_type,1024); //get the data of size 1024
/* Write the data into the file, verify it by checking the file pointer position, eof position,
filesize & by displaying the content */
/*overwrite first 400 bytes in the file*/
var_dump( ftell($file_handle) ); // expected : 0
var_dump( fwrite($file_handle, $data_to_be_written, 400));
var_dump( ftell($file_handle) ); // expected: 400
var_dump( feof($file_handle) ); //Expecting bool(false)
/*overwrite data in middle of the file*/
fseek($file_handle, SEEK_SET, 1024/2 );
var_dump( ftell($file_handle)); // expected: 1024/2
var_dump( fwrite($file_handle, $data_to_be_written, 200) );
var_dump( ftell($file_handle) );
var_dump( feof($file_handle) ); //Expecting bool(false)
/* write at the end of the file */
fseek($file_handle, SEEK_END, 0);
var_dump( ftell($file_handle) ); // expected: 1024
var_dump( feof($file_handle) );
var_dump( fwrite($file_handle, $data_to_be_written, 200) );
var_dump( ftell($file_handle) );
var_dump( feof($file_handle) ); //Expecting bool(false)
/* display the file content, check the file size */
var_dump( fclose($file_handle) );
clearstatcache();//clears file status cache
var_dump( filesize($filename) );
var_dump(md5(file_get_contents($filename)));
delete_file($filename); // delete file with name fwrite_variation2.tmp
} // end of inner foreach loop
} // end of outer foreach loop
echo "Done\n";
?>
--EXPECTF--
*** Testing fwrite() various operations ***
-- Testing fwrite() with file having content of type numeric --
-- Opening file in r+ --
int(0)
int(400)
int(400)
bool(false)
int(400)
int(200)
int(600)
bool(false)
int(2)
bool(false)
int(200)
int(202)
bool(false)
bool(true)
int(1024)
string(32) "950b7457d1deb6332f2fc5d42f3129d6"
-- Opening file in r+b --
int(0)
int(400)
int(400)
bool(false)
int(400)
int(200)
int(600)
bool(false)
int(2)
bool(false)
int(200)
int(202)
bool(false)
bool(true)
int(1024)
string(32) "950b7457d1deb6332f2fc5d42f3129d6"
-- Opening file in r+t --
int(0)
int(400)
int(400)
bool(false)
int(400)
int(200)
int(600)
bool(false)
int(2)
bool(false)
int(200)
int(202)
bool(false)
bool(true)
int(1024)
string(32) "950b7457d1deb6332f2fc5d42f3129d6"
-- Testing fwrite() with file having content of type text --
-- Opening file in r+ --
int(0)
int(400)
int(400)
bool(false)
int(400)
int(200)
int(600)
bool(false)
int(2)
bool(false)
int(200)
int(202)
bool(false)
bool(true)
int(1024)
string(32) "3bdaf80dae28bc24bb304daa5ffee16c"
-- Opening file in r+b --
int(0)
int(400)
int(400)
bool(false)
int(400)
int(200)
int(600)
bool(false)
int(2)
bool(false)
int(200)
int(202)
bool(false)
bool(true)
int(1024)
string(32) "3bdaf80dae28bc24bb304daa5ffee16c"
-- Opening file in r+t --
int(0)
int(400)
int(400)
bool(false)
int(400)
int(200)
int(600)
bool(false)
int(2)
bool(false)
int(200)
int(202)
bool(false)
bool(true)
int(1024)
string(32) "3bdaf80dae28bc24bb304daa5ffee16c"
-- Testing fwrite() with file having content of type text_with_new_line --
-- Opening file in r+ --
int(0)
int(400)
int(400)
bool(false)
int(400)
int(200)
int(600)
bool(false)
int(2)
bool(false)
int(200)
int(202)
bool(false)
bool(true)
int(1024)
string(32) "b188d7c8aa229cbef067e5970f2daba9"
-- Opening file in r+b --
int(0)
int(400)
int(400)
bool(false)
int(400)
int(200)
int(600)
bool(false)
int(2)
bool(false)
int(200)
int(202)
bool(false)
bool(true)
int(1024)
string(32) "b188d7c8aa229cbef067e5970f2daba9"
-- Opening file in r+t --
int(0)
int(400)
int(400)
bool(false)
int(400)
int(200)
int(600)
bool(false)
int(2)
bool(false)
int(200)
int(202)
bool(false)
bool(true)
int(1024)
string(32) "b188d7c8aa229cbef067e5970f2daba9"
-- Testing fwrite() with file having content of type alphanumeric --
-- Opening file in r+ --
int(0)
int(400)
int(400)
bool(false)
int(400)
int(200)
int(600)
bool(false)
int(2)
bool(false)
int(200)
int(202)
bool(false)
bool(true)
int(1024)
string(32) "5d4ec23a3d9dd447e2f702d9e0e114d9"
-- Opening file in r+b --
int(0)
int(400)
int(400)
bool(false)
int(400)
int(200)
int(600)
bool(false)
int(2)
bool(false)
int(200)
int(202)
bool(false)
bool(true)
int(1024)
string(32) "5d4ec23a3d9dd447e2f702d9e0e114d9"
-- Opening file in r+t --
int(0)
int(400)
int(400)
bool(false)
int(400)
int(200)
int(600)
bool(false)
int(2)
bool(false)
int(200)
int(202)
bool(false)
bool(true)
int(1024)
string(32) "5d4ec23a3d9dd447e2f702d9e0e114d9"
Done
|