Simple PHP Proxy

proxy.php

<?php
/**
 * @author Han Lin Yap < http://zencodez.net/ >
 * @copyright 2012 zencodez.net
 * @license http://creativecommons.org/licenses/by-sa/3.0/
 * @package proxy
 * @version 1.0 - 2012-05-01
 */
$method = $_SERVER['REQUEST_METHOD'];
$request = substr($_SERVER['PATH_INFO'], 1);
$request = str_replace('http:/', 'http://', $request);

# Request headers
$headers = apache_request_headers();
$header_string = '';
foreach ($headers AS $header => $value) {
	if (strtolower($header) == 'host') continue;
	$header_string .= "$header: $value\r\n";
}

$opts = array('http' =>
	array(
		'method' => $method,
		'header' => $header_string,
	)
);

# Request content
if ($method == 'GET') {
	$request .= '?' . http_build_query($_GET);
} else {
	$content = ($method == 'POST') ? http_build_query($_POST) : @file_get_contents('php://input');

	$opts['http']['content'] = $content;
}

# Proxy
$result = @file_get_contents($request, false, stream_context_create($opts));

# Response headers
foreach ($http_response_header AS $header) {
	header($header);
}

# Response content
echo $result;