<?php $arr = [ 0 => 'DR-876-000-3.jpg', 1 => 'DRhgh000-2.jpg', 2 => 'DR-876-000-1.jpg', 3 => 'DR-876-000.png', 4 => 'DR-876-000.jpg', 5 => 'DR-876-000-4.jpg', ]; usort ( $arr , function ($a, $b) { return strnatcmp(pathinfo($a, PATHINFO_FILENAME), pathinfo($b, PATHINFO_FILENAME)); }); var_dump($arr);
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