Online PHP editor | refs for LXNNu

<?php $filename = "music.mp3"; if (substr($filename, -3) != 'mp3') : elseif (substr($filename, -3) != 'mp4') : elseif (substr($filename, -3) != 'pdf') : elseif (substr($filename, -3) != 'doc') : elseif (substr($filename, -3) != 'zip') : elseif (substr($filename, -3) != 'epub') : elseif (substr($filename, -3) != 'mobi') : else : echo "Exited!"; endif;