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  Classes of Ralf Mike Pretzlaw  >  Overload  >  Help.txt  >  Download  
File: Help.txt
Role: Documentation
Content type: text/plain
Description: Summary of the functionality
Class: Overload
Emulate class function overloading
Author: By
Last change: Missed semicolon
Date: 5 years ago
Size: 1,256 bytes
 

Contents

Class file image Download
You just need multiple (protected!) functions in your class with the special signature to work with them in an object as known from JAVA etc.

There are 7 types that you can vary:
	B - Boolean
	I - Integer / Long
	F - Float / Double
	S - String
	A - Array
	O - Object
	R - Ressource
 
Just add these letters after an underline character ("_") to define the signature of the function. All functions have to be protected!

Here is an example:
 
	class Example extends Overload
 	{
	  	protected function foo()
	  	{
	  		return NULL;
	  	}
	  
	  	protected function foo_S($string)
	 	{
	  		echo $string;
	  	}
	  
	  	protected function foo_SI($string, $integer)
	  	{
	  		echo
				$string . " equals " . $integer . ".";
	  	}
	}
  
Now you can call just "foo" with different signatures:
  
	$o = new Example();
	$o->foo();					// Will call foo()
	$o->foo("Hello World!");	// Will call foo_S("Hello World!")
	$o->foo("Pi", 3);			// Will call foo_SI("Pi", 3)

	$o->foo(3, "Pi");			// Will lead to an error because there is no
								   function with foo_IS
	$o->foo($o, 1);				// Will lead to an error because there is no
								   function with foo_OI

NOTE: It only works in objects / non-static functions.