os-partnership/php/lib/params.php

<?php
class parameters extends randomAccess {
	function __construct(){
		parent::__construct();
		$this->params = $_POST;
	}
}

class randomAccess {
	protected $params;

	function __construct(){
		$this->params = array();
	}

	function __set( $name, $value ){
		$this->params[ $name ] = $value;
	}

	function __get( $name ){
		$result = "";
		if( array_key_exists( $name, $this->params ) ){
			$result = $this->params[ $name ];
		}
		else if( array_key_exists( $name, $_POST ) ){
			$result = $_POST[ $name ];
		}
		else if( array_key_exists( $name, $_GET ) ){
			$result = $_GET[ $name ];
		}
		return $result;
	}

	function unset( $name ){
		if( array_key_exists( $name, $this->params ) ){
			unset( $this->params[ $name ] );
		}
		return count( $this->params );
	}

	function listKeys(){
		return array_keys( $this->params );
	}

	function maskedKeys(){
		$mask = array();
		foreach( $this->params as $key => $value ){
			if( array_key_exists( $key, $_POST ) || array_key_exists( $key, $_GET ) ){
				$mask[] = $key;
			}
		}
		return $mask;
	}
}
?>