freeMobileCheckWebsite.php

<?php
// Sites
$sitesArray[] = "https://silentkernel.fr";
$sitesArray[] = "https://storage.silentkernel.fr";

// Users
$usersUrlArray[] = "https://smsapi.free-mobile.fr/sendmsg?user=xxxxxxx&pass=xxxxxxxxxx&msg=";

// Begin code
function getResponseInfo($url)
{
    $ch = curl_init($url);
    curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.23");
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
    curl_exec($ch);
    $info = curl_getinfo($ch);
    curl_close($ch);
    return $info;
}

$resultString = "";

foreach ($sitesArray as $url) {
    $info = getResponseInfo($url);

    if (!isset($info["http_code"])) {
        $resultString .= " " . $url;
    } elseif ($info["http_code"] != 200) {
        $resultString .= " " . $url;
    }
    // Prevent flooding servers
    sleep(1);
}

if ($resultString != "") {
    $SMS = urlencode("Down :" . $resultString);
//      var_dump($SMS);

    foreach ($usersUrlArray as $userUrl) {
        getResponseInfo($userUrl . $SMS);
    }
}