How do I get a file extension in PHP?

Question

This is a question you can read everywhere on the web with various answers:

$ext = end(explode(\'.\', $filename));
$ext = substr(strrchr($filename, \'.\'), 1         


        

Answer 1

ltrim(strstr($file_url, '.'), '.')

this is the best way if you have filenames like name.name.name.ext (ugly, but it sometimes happens