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

If you are looking for speed (such as in a router), you probably don't want to tokenize everything. Many other answers will fail with /root/my.folder/my.css

ltrim(strrchr($PATH, '.'),'.');