Using PHP with Java - Getting Started (
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PHP doesn't come with Java support
turned on by default, so you'll need to recompile it to enable this support. You
can do this by adding the "--with-java" compile-time parameter to the PHP
"configure" script. Note that you'll also need a copy of the latest JDK - you
can get this from
http://java.sun.com/ (the
examples in this article use version 1.3.0 of the JDK).
If you're using
Windows, you've already got a pre-built Java extension with your PHP
distribution - all you need to do is enable it. First, make sure that your
system's PATH variable includes the path to the JDK - this can easily be
accomplished by altering the PATH variable in your "autoexec.bat"
file.
Next, pop open the "php.ini" configuration file, and skip over all
the cryptic configuration commands to the "Java" section. There, set values for
the following variables:
java.library - this refers to the location of
the Java Virtual Machine file (jvm.dll), usually located in the JRE
directory;
java.library.path - this refers to the location of PHP's Java
extension;
java.home - this refers to the JDK's "bin"
directory;
java.class.path - this refers to the Java CLASSPATH, which
contains your custom Java classes. You should make sure that this variable
always includes the location of the "php_java.jar" file (usually the
/java/ directory)
While you're editing this file, also
drop by the "Windows Extensions" section of "php.ini" and uncomment the
"php_java.dll" extension.
Finally, check to make sure that the file
"php_java.dll" is in the /extensions/ sub-directory, restart
your Web server, and you're ready to roll!
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