async.php

<?php

/*
 *
 * Copyright by Pete Warden: http://petewarden.typepad.com/searchbrowser/2008/06/how-to-post-an.html
 * Adapted by Bastian Allgeier: http://bastian-allgeier.de
 *
 */

function async($url, $params) {
	
	// parse the url to get out the different parts we need
	$parts = @parse_url($url);
	if(!$parts) return false;

	// determine the right port	
	$port = (isset($parts['port'])) ? $parts['port'] : 80;

	// build a connection to the socket
	$socket = @fsockopen($parts['host'], $port, $errno, $errstr, 30);

	// connection failed
	if(!$socket) return false;

	// build the post request we'd like to send	
	$out  = "POST " . $parts['path'] . " HTTP/1.1\r\n";
	$out .= "Host: " . $parts['host'] . "\r\n";
	$out .= "Content-Type: application/x-www-form-urlencoded\r\n";
	$out .= "Content-Length: " . strlen($data) . "\r\n";
	$out .= "Connection: Close\r\n\r\n";

	// add our query parameters
	if(!empty($params)) $out .= http_build_query($params);
	
	// writing all that to the socket
	$write = @fwrite($socket, $out);
	
	// writing failed  
	if(!$write) return false;

	// finally close the socket
	@fclose($socket);

	// everything went fine	
	return true;

}

?>