PHP hello world module (jar version)

Introduction

This short article is intended for java programers who are interested in creating there own libraries which can be invoked from within a PHP page. It assumes that Resin's PHP implementation is installed and working correctly on your computer. Please see the related article PHP Hello World for more information on installing Resin for the first time.

Step 1: Create Example.jar

Create your development environment

The steps that follow assume you are working in a Windows environment. If you are working within Unix (or Linux or Mac), the same steps will work. Just be sure to modify the commands where necessary.

c:\Documents and Settings\Charles >cd c:\
c:\> md sandbox
c:\sandbox> md src
c:\sandbox> cd src
c:\sandbox\src> md Example
c:\sandbox\src> md META-INF
c:\sandbox\src> cd META-INF
c:\sandbox\src\META-INF> md services

Create HelloWorldSampleClass.java

Copy the following file into your favorite text editor (notepad will do) and save it to the c:\sandbox\src\Example directory.

package Example;

import com.caucho.php.module.AbstractPhpModule;
import com.caucho.php.env.StringValue;

public class HelloWorldSampleClass extends AbstractPhpModule {

  public StringValue say_hello(String name)
  {
    return new StringValue("Hello, " + name);
  }
}

Create com.caucho.php.PhpModule

Copy the following one line file and save it to the c:\sandbox\src\META-INF\services directory. Make sure that the file name is exactly "com.caucho.php.PhpModule"

Example.HelloWorldSampleClass

Step 2: Create the PHP page

javahello.php

?php

$name = say_hello("Charles");
echo $name;

?>

Conclusion

Enjoy