How to ignore image format case?

Question

PHP

Good afternoon, in general, there is a column in the database where the path to the image lies, as an example "/img/1.png" the file itself has the extension "1.PNG", the server on windows does not care about the extension case, but not the Linux server, which it is necessary to register in php so that the server does not care about the case of the extension?

Answer 1

$src = mb_strtolower($src);

Answer 2

use rename() for files