PartialApplicationHelper.php
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	<?php

	/**
	* Helper class to wrap an object with a modified interface created by
	* a partial application of its existing methods.
	*
	* @category Services
	* @package Services_Twilio
	* @author Neuman Vong <neuman@twilio.com>
	* @license http://creativecommons.org/licenses/MIT/ MIT
	* @link http://pear.php.net/package/Services_Twilio
	*/
	class Services_Twilio_PartialApplicationHelper
	{
	private $callbacks;

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

	public function set($method, $callback, array $args)
	{
	if (!is_callable($callback)) {
	return FALSE;
	}
	$this->callbacks[$method] = array($callback, $args);
	}

	public function __call($method, $args)
	{
	if (!isset($this->callbacks[$method])) {
	throw new Exception("Method not found: $method");
	}
	list($callback, $cb_args) = $this->callbacks[$method];
	return call_user_func_array(
	$callback,
	array_merge($cb_args, $args)
	);
	}
	}