<?php
$url = 'https://www.url.com/2/dunlop.jpg';
$filename = substr(strrchr($url, '/'), 1);
$ext = pathinfo($filename, PATHINFO_EXTENSION);
$filename = substr($filename, 0, - strlen('.' . $ext));
// Alternatif
$filename = explode('/', $url);
$filename = $filename[ sizeof($filename) - 1 ];
$filename = preg_replace('/\.(.+?)$/i', '', $filename);
echo $filename;
?>