How can I change a file's extension using PHP?

Question

How can I change a file\'s extension using PHP?

Ex: photo.jpg to photo.exe

Answer 1

You could use basename():

$oldname = 'path/photo.jpg';
$newname = (dirname($oldname) ? dirname($oldname) . DIRECTORY_SEPARATOR  : '') . basename($oldname, 'jpg') . 'exe';

Or for all extensions:

$newname = (dirname($oldname) ? dirname($oldname) . DIRECTORY_SEPARATOR  : '') . basename($oldname, pathinfo($path, PATHINFO_EXTENSION)) . 'exe';

Finally use rename():

rename($oldname, $newname);