<?php
// This file powers the ad server

header('Content-type: application/json');
header('User-Agent: Mozilla Compatible');

$opts = array(
    'http' => array(
        'method' => 'GET',
        'header' => 'User-Agent: Mozilla Compatible',
    )
);

$context = stream_context_create($opts);

if(isset($_REQUEST['url'])){
	if(file_get_contents($_REQUEST['url'], false, $context) !== false){
		echo 'true';
	} else {
		echo 'false';
	}
}
exit;