find file extension using php

lets learn the search capabilities of php to find if the file is a jpg or a png file, and then perform an action.

$filename=”myfile.png”;
$fileextension = pathinfo($filename, PATHINFO_EXTENSION);

if($fileextension == “png”){echo(“we got a png to display.”)}else{echo(“jpg image display”);}

Works great for what I have goin on. Can’t reveal the deets, but it’s huge, of course.