Get Files of certain extension(s) in PHP
get extension from filename php
// your file
$file = 'image.jpg';
$info = pathinfo($file);
// Before PHP 5.2
$file_name = basename($file, '.'.$info['extension']);
// After PHP 5.2
$file_name = $info['filename'];
php get file extension
$path ="/some/path/to/myfilename.html";
$ext = pathinfo($path, PATHINFO_EXTENSION);//ext is "html"