Best way to get files from a dir filtered by certain extension in php

If you want more than one extension searched, then preg_grep() is an alternative for filtering:

 $files = preg_grep('~\.(jpeg|jpg|png)$~', scandir($dir_f));

Though glob has a similar extra syntax. This mostly makes sense if you have further conditions, add the ~i flag for case-insensitive, or can filter combined lists.

PHP has a great function to help you capture only the files you need. Its called glob()

glob - Find pathnames matching a pattern

Returns an array containing the matched files/directories, an empty array if no file matched or FALSE on error.

Here is an example usage -

$files = glob("/path/to/folder/*.txt");

This will populate the $files variable with a list of all files matching the *.txt pattern in the given path.

Reference -

• glob()

PHP's glob() function let's you specify a pattern to search for.