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diff --git a/ext/rpc/java/README b/ext/rpc/java/README deleted file mode 100644 index 1cfdc113eb..0000000000 --- a/ext/rpc/java/README +++ /dev/null @@ -1,243 +0,0 @@ -What is PHP4 ext/java? - - PHP4 ext/java provides a simple and effective means for creating and - invoking methods on Java objects from PHP. The JVM is created using JNI, - and everything runs in-process. - - Two examples are provided, jver and jawt, to illustrate usage of this - extension. A few things to note: - - 1) new Java() will create an instance of a class if a suitable constructor - is available. If no parameters are passed and the default constructor - is useful as it provides access to classes like "java.lang.System" - which expose most of their functionallity through static methods. - - 2) Accessing a member of an instance will first look for bean properties - then public fields. In other words, "print $date.time" will first - attempt to be resolved as "$date.getTime()", then as "$date.time"; - - 3) Both static and instance members can be accessed on an object with - the same syntax. Furthermore, if the java object is of type - "java.lang.Class", then static members of the class (fields and - methods) can be accessed. - - 4) Exceptions raised result in PHP warnings, and null results. The - warnings may be eliminated by prefixing the method call with an - "@" sign. The following APIs may be used to retrieve and reset - the last error: - - java_last_exception_get() - java_last_exception_clear() - - 5) Overload resolution is in general a hard problem given the - differences in types between the two languages. The PHP Java - extension employs a simple, but fairly effective, metric for - determining which overload is the best match. - - Additionally, method names in PHP are not case sensitive, potentially - increasing the number of overloads to select from. - - Once a method is selected, the parameters are cooerced if necessary, - possibly with a loss of data (example: double precision floating point - numbers will be converted to boolean). - - 6) In the tradition of PHP, arrays and hashtables may pretty much - be used interchangably. Note that hashtables in PHP may only be - indexed by integers or strings; and that arrays of primitive types - in Java can not be sparse. Also note that these constructs are - passed by value, so may be expensive in terms of memory and time. - -Build and execution instructions: - - Given the number of platforms and providers of JVMs, no single set of - instructions will be able to cover all cases. So in place of hard and - fast instructions, below are a working examples for a number of free and - commercial implementations and platforms. Please adjust the paths to - suit your installation. Also, if you happen to get this to work on - another JVM/platform combination, please let me know, particularly if - a unique build or execution setup was required. - - Note for Windows users: semi-colons (";") mark the beginning of - comments in php.ini files, so if you wish to add to the classpath, - make sure that the entire string is in quotes. See the JDK 1.1.8 - instructions below for an example. - - This function has been tested in both CGI and Apache (apxs) modes. As - the current design requires shared libraries, this support can not be - linked statically into Apache. - - With ext/java, no Java Virtual Machines are created until the first - Java call is made. This not only eliminates unnecessary overhead if - the extension is never used, it also provides error messages directly - back to the user instead of being burried in a log some place. - - For people interested in robustness, performance, and more complete - integration with Java, consider using the sapi/servlet interface which - is built upon the Java extension. Running PHP as a servlet enables PHP - to utilize the existing JVM and threads from the servlet engine, and - provides direct access to the servlet request and response objects. - - Finally, the bottom of this readme contains some guidance for how to - approach situations in which these instructions don't work on your - machine. - -======================================================================== -=== JVM=Kaffe 1.0.4 (as delivered with OS), OS=Redhat Linux 6.1 === -======================================================================== - -build instructions: - - ./configure --with-java - -php.ini: - - [java] - java.library.path=/usr/lib/kaffe:/home/rubys/php4/modules - java.class.path=/usr/share/kaffe/Klasses.jar:/home/rubys/php4/modules/php_java.jar - extension_dir=/home/rubys/php4/modules - extension=libphp_java.so - -======================================================================== -=== JVM=Kaffe 1.0.5 (built from source), OS=Redhat Linux 6.1 === -======================================================================== - -build instructions: - - ./configure --with-java - -php.ini: - - [java] - java.library.path=/usr/local/lib/kaffe:/home/rubys/php4/modules - java.class.path=/usr/local/share/kaffe/Klasses.jar:/home/rubys/php4/modules/php_java.jar - extension_dir=/home/rubys/php4/modules - extension=libphp_java.so - -======================================================================== -=== JVM=IBM 1.1.8, OS=Redhat Linux 6.1 === -======================================================================== - -build instructions: - - ./configure --with-java - -php.ini: - - [java] - java.class.path=/home/jdk118/lib/classes.zip:/home/rubys/php4/modules/php_java.jar - extension_dir=/home/rubys/php4/modules - extension=libphp_java.so - -======================================================================== -=== JVM=Blackdown 1.2.2 RC4, OS=Redhat Linux 6.1 === -======================================================================== - -build instructions: - - ./configure --with-java - -php.ini: - - [java] - java.class.path=/home/rubys/php4/lib/php_java.jar - extension_dir=/home/rubys/php4/modules - extension=libphp_java.so - -======================================================================== -=== JVM=Sun JDK 1.2.2, OS=Linux === -======================================================================== - -build instructions: - - ./configure --with-java - -php.ini: - - [java] - java.class.path=/home/rubys/php4/lib/php_java.jar - java.library.path=/home/rubys/php4/modules - extension_dir=/home/rubys/php4/modules - extension=libphp_java.so - -======================================================================== -=== JVM=Sun JDK 1.1.8, OS=Windows NT 4 === -======================================================================== - -build instructions: - - SET JAVA_HOME=D:\jdk1.1.8 - msdev ext\java\java.dsp /MAKE "java - Win32 Debug_TS" - -php.ini: - - [java] - java.class.path="D:\jdk1.1.8\lib\classes.zip;F:\PHP4\Debug_TS\php_java.jar" - extension=php_java.dll - -======================================================================== -=== JVM=Sun JDK 1.2.2, OS=Windows NT 4 === -======================================================================== - -build instructions: - - SET JAVA_HOME=D:\jdk1.2.2 - msdev ext\java\java.dsp /MAKE "java - Win32 Debug_TS" - -php.ini: - - [java] - java.class.path=F:\PHP4\Debug_TS\php_java.jar - extension=php_java.dll - -========================================================================= - -Guidance for when these instructions don't work. - - JDK vendors don't typically document their internal workings, and are - typically very reliant on code inside of the JAVA main program and the - installation directory structure. For this reason, running PHP as a - servlet is typically much easier to get working. But if for some reason - this is not appropriate for you, and the instructions above don't work, - then read on. - - The first thing to realize is that the directory structure of the JDK is - very important. Some users (particularly on Windows) get a message about - a DLL or shared library not being available and proceed to find that file - and copy it into a system directory. This typically just gets you to the - next problem - for example, it appears that many JDKs attempt to locate - the runtime Java classes (rt.jar) in a directory relative to these system - libraries. So unless you are inclined to copy your entire Java - installation, you are much better adjusting your PATHs. - - Not documented above, but useful for many JDK's is ability to specify the - library path via java.library.path in the php.ini. On many Unix machines, - determining the initial value for this can be done by changing directory - to where you find a shared library that can't be loaded (example: - libjava.so), and executing "ld libjava.so". If you see some modules - listed as "not found", add the necessary directories to LD_LIBRARY_PATH - and repeat until successful. On my system, I require the following - two directories. - - /home/jdk1.2.2/jre/lib/i386/native_threads - /home/jdk1.2.2/jre/lib/i386/classic - - Note: this only determines the statically loaded libraries. Additional - libraries (such as libzip.so) may be loaded dynamically. On my system, - libzip.so is located in - - /home/jdk1.2.2/jre/lib/i386 - - Another php.ini variable which may be helpful is java.home. - - If java.library.path doesn't work for you (it won't on any JDK 1.1 - implementations, for example), then try setting the system PATH or the - LD_LIBRARY_PATH before starting your web server. For Apache on Linux - systems, this can be accomplished by editing the Root's .bashrc and - adding the necessary export LD_LIBRARY_PATH statement. - - If that doesn't work, try dividing an (hopefully) conquering by temporarily - eliminating items such as Apache from the process by adjusting the - arguments passed to the ./configure command (i.e., removing --with-apxs). - - If all else fails, "man dlopen" on Unix systems will give more insight on - what the system is trying to do internally. |