Tutorials :PHP and Java: Powerful Forces Combined :

Java Classes in PHP Scripts: An Example

The CalculatorBean class defines four methods for operators and one method for returning the result. The source code is shown in Listing 1.

After you compile this Java source, place it in a .jar archive named calculator.jar. Copy this file to the appName/WEB-INF/lib directory.

Now it's time to develop the PHP script that will call the above Java class. Using the methods described in the “Use Java classes in PHP scripts” section, you can write the calculator.php as shown in Listing 2.

Place the calculator.php script in the appName directory. Now, if you test this application under Tomcat application server (localhost, 8080), you should be able to see the result by going to the following URL: http://localhost:8080/appName/calculator.php. The result is shown in Figure 1.

PHP Scripts in JSP Pages: An Example

<%
  javax.script.ScriptEngine e = 
  php.java.script.EngineFactory.getInvocablePhpScriptEngine 
(this, application, request, response);
  e.getContext().setWriter(out);

  e.eval ("<?php function randomNumber($maxim) { return rand(0,java_values($maxim)); }; ?>");

  javax.script.Invocable i = (javax.script.Invocable) e;

  Object result = null;
  result = i.invokeFunction("randomNumber", new Object[]{new Integer(100)});

  e.eval ((java.io.Reader)null); // flush the output generated by invokeXXX

  out.println("Random number printed from the servlet: " + result);
%>

How to Add Java Applets to Your Site

New on the Java Boutique:

New Review:

Time Management Made Easy with the Quartz Enterprise Job Scheduler
Why not just use the Java timer API? This open source scheduling API boasts simplicity, ease-of-integration, a well-rounded feature set, and it's free!

New Applet:

Reverse Complement
Reverse Complement is a simple applet that converts DNA or RNA sequences into three useful formats.

Elsewhere on internet.com:

WebDeveloper Java
Lots of Java information on webdeveloper.com

WDVL Java
Thorough Java resource at the Web Developer's Virtual Library.

ScriptSearch Java
Hundreds of free Java code files to download.

jGuru: Your View of the Java Universe
Customizable portal with online training, FAQs, regular news updates, and tutorials.