wol.php

<?php
	if(!filter_var($_GET['mac'], FILTER_VALIDATE_MAC)){
		//invalid mac
		die();
	}
	if(!filter_var($_GET['broadcast'], FILTER_VALIDATE_IP, FILTER_FLAG_IPV4)){
		//invalid ipv4 address
		die();
	}	
	
	wol($_GET['broadcast'], $_GET['mac']);

	function wol($broadcast, $mac)
	{
		$hwaddr = pack('H*', preg_replace('/[^0-9a-fA-F]/', '', $mac));

		// Create Magic Packet
		$packet = sprintf(
			'%s%s',
			str_repeat(chr(255), 6),
			str_repeat($hwaddr, 16)
		);

		$sock = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP);

		if ($sock !== false) {
			$options = socket_set_option($sock, SOL_SOCKET, SO_BROADCAST, true);

			if ($options !== false) {
				socket_sendto($sock, $packet, strlen($packet), 0, $broadcast, 7);
				socket_close($sock);
			}
		}
	}
?>