Tutorials :PHP and Java: Powerful Forces Combined :

Using Java Classes in PHP Scripts

• java: This allows you to access the Java type with the given name. For example:

  java("java.lang.System")->getProperties();
  

• java_autoload: This allows you to load a set of Java libraries in the current PHP script. For example:

  java_autoload("my_1.jar;my_2.jar");
  

• java_cast: This allows you to convert a Java object into a PHP value. For example:

  $mystr=new java("java.lang.String","9");$phpnr=java_cast($mystr,"integer");echo $ phpnr;
  

• java_is_null: This allows you to check if a value is null or not. For example:

  java_is_null(java("java.lang.System")->;getProperty("my_prop"))
  

• java_session: This allows you to return a session handle. For example:

  $session = java_session();
  

• java_values: This allows you to evaluate the object and fetch its content (only if this is possible). For example:

  $result = java_values($calcinstance->addAB($term_1,$term_2));
  
  

$calcinstance=new Java("calculator.CalculatorBean");

Author's Note: More functions and their details can be found in the /documentation/API directory of the PHP/Java Bridge distro.

Using PHP Scripts in Java Classes

• javax.script.ScriptEngineManager: This class extends the java.lang.Object class and implements discovery and instantiation mechanisms for the ScriptEngine class.
• javax.script.ScriptEngine: This is a Java interface that contains only the methods expected to be fully functional in every Java ScriptEngine. It's implemented by classes like AbstractScriptEngine, InteractivePhpScriptEngine, InvocablePhpScriptEngine, InvocablePhpServletScriptEngine,PhpScriptEngine, and PhpServletScriptEngine.
• javax.script.Invocable: This interface offers methods that allow Java applications to invoke intermediate codes in the underlying scripting interpreter.

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