Host alive checker

gistfile1.aw

<?php
/**
 * Send mail with response if the target host is up
 * 
 * @author Yuki Matsukura
 * @date 2011-09-24
 */

/** @var string target URL */
$url = 'https://buy.itunes.apple.com/verifyReceipt';

// comment in for test
// $url = 'https://www.facebook.com/';

/** @var array mail address to send up notification */
$address_array = array('[email protected]');


while (true) {
        print date('Y-m-d H:i:s').":";
        $contents = @file_get_contents($url);

        if (!$contents) {
                print "error!\n";
                sleep(10);
                continue;
        }

        print "succeeded!\n";
        break;
}


// notify the host is up
foreach($address_array as $address) {
        mail($address, 'The host is up!', "Response:\n\n".$contents);
}