Using PHP With Tomcat

This tutorial shows how to use PHP version 4 with Tomcat version 4 or later. The tutorial was originally written and sent to the tomcat-dev mailing list by Jean-Frederic Clere (on his vacation, no less ) and Henri Gomez.

Prerequisites

Download PHP (this tutorial uses PHP 4.3.5)
Download Tomcat (this tutorial uses Tomcat 5.0.19)
Define $JAVA_HOME for your JDK installation
Define $TOMCAT_HOME for your Tomcat installation
Define $PHP_HOME for your PHP installation

Patch for PHP configure Script

There is a patch required to compile PHP to use Tomcat 5.

Prior to version 2.4 of Servlet Specification, the name of the servlet jar file was servlet.jar. In version 2.4 of the Servlet Specification, this name was changed to servlet-api.jar. Tomcat 4 uses the name servlet.jar, whereas Tomcat 5 and later uses servlet-api.jar. This causes problems with PHP's configure script.

This patch for PHP's configure script will fix this problem:

--- configure.org       2004-04-07 11:20:24.000000000 +0200
+++ configure   2004-04-07 11:22:50.000000000 +0200
      if test "$withval" = "yes"; then
        SERVLET_CLASSPATH=.
      else
+      if test -f $withval/common/lib/servlet-api.jar; then
+        SERVLET_CLASSPATH=$withval/common/lib/servlet-api.jar
+      fi
+
        if test -f $withval/lib/servlet.jar; then
          SERVLET_CLASSPATH=$withval/lib/servlet.jar
       fi

PHP Installation

Extract the source code to PHP in a work directory
Patch if needed (that is, patch if building PHP to run with Tomcat version 5 or later)

Run configure, then make in the top directory of the PHP sources:

 ./configure --with-servlet=$TOMCAT_HOME --with-java=$JAVA_HOME
 make

A jar file and dynamic library are produced from the make: sapi/servlet/phpsrvlt.jar and libs/libphp4.so.
Copy the jar file to your web application's class repository, or, alternately, to Tomcat's common class repository (as is shown here):
```
 cp $PHP_HOME/sapi/servlet/phpsrvlt.jar $TOMCAT_HOME/common/lib
```
Declare PHP servlet and servlet-mapping in the web applications web.xml file, or in Tomcat's shared web.xml file:
- Copy from $PHP_HOME/sapi/servlet/web.xml the servlet and servlet-mapping and paste into the file $TOMCAT_HOME/conf/web.xml.
Modify your LD_LIBRARY_PATH to include the dynamic library produced in the first step above:
```
 LD_LIBRARY_PATH=$PHP_HOME/libs
 export LD_LIBRARY_PATH
```

Start Tomcat

 $TOMCAT_HOME/bin/startup.sh.

Testing

Create a file named test.php in the docBase directory of your webapp.

In that file, simply put:

   <?php phpinfo(); ?>

Point your browser at the file by navigating to http://localhost:8080/test.php

If everything is working as it should, you will see an informational status page produced by PHP.

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