- getimagesize: documentation ( source)
- ip2long: documentation ( source)
<?php
echo ip2long('192.30.252.1');
echo ip2long('192.30.255.254');
echo ip2long('185.199.108.1');
echo ip2long('185.199.111.254');
echo ip2long('140.82.112.1');
echo ip2long('140.82.127.254');
// $var = (object)array();
$url = 'https://mdev.boneal.net/images/logo_login_boneal_net.png';
$var = getimagesize($url);
// $var = imagecreatefromjpeg($url);
echo empty($var) ? 1 : 0;
echo '<br>';
echo gettype($var);