Takes GET url w/ Post Parameters and sends the request on to a very basic rest server.

apiProcessor.php

<?php
class apiProcessor{
        private $gets;
        private $posts;
        public function __construct($gets,$posts){
                $this->gets = $gets;
                $this->posts = $posts;
        }
        public function process(){
		$url = $this->gets['url'];
		$context = stream_context_create(array(
			'http'  => array(
				'method'        => 'POST',//never want to send credentials over GET
				'header'        => 'Content-type: application/x-www-form-urlencoded',
				'content'       => http_build_query($this->posts),
				'timeout'       => 30.0, //in seconds
				'user_agent'=> 'XMLToJsonAPIClient',
			)
		));
		$res = file_get_contents($url,false,$context);
		$xmlObject = simplexml_load_string($res);
                $json = json_encode($xmlObject);
		return $json;
        }

}
$processor = new apiProcessor($_GET,$_POST);
echo $processor->process();