تشخیص زمان( ساعت) و تاریخ یک سایت

[JeyServer]

سلام

<?php
file_get_contents("https://www.isna.ir/");
$remoteDate = "";
$remoteTime = 0;
foreach($http_response_header as $line) {
    if (substr(strtolower($line), 0, 5) == "date:") {
        $remoteDate = trim(substr($line, 5));
    }
}
if ($remoteDate) {
    $remoteTime = strtotime($remoteDate);
}
var_dump($remoteDate);
var_dump($remoteTime);