PHP Natsort

phpnatsort.php

<?php

    $array = array(
            '/dir/arquivo-01.jpg',
            '/dir/arquivo-02.jpg',
            '/dir/arquivo-03.jpg',
            '/dir/arquivo-04.jpg',
            '/dir/arquivo-05.jpg',
            '/dir/arquivo-06.jpg',
            '/dir/arquivo-07.jpg',
            '/dir/arquivo-08.jpg',
            '/dir/arquivo-09.jpg',
            '/dir/arquivo-010.jpg',
            '/dir/arquivo-011.jpg',
            '/dir/arquivo-012.jpg',
            '/dir/arquivo-013.jpg',
            '/dir/arquivo-014.jpg',
            '/dir/arquivo-015.jpg',
            '/dir/arquivo-016.jpg',
            '/dir/arquivo-017.jpg',
            '/dir/arquivo-018.jpg',
            '/dir/arquivo-019.jpg',
            '/dir/arquivo-020.jpg',
            '/dir/arquivo-021.jpg',
            '/dir/arquivo-022.jpg',
        );

    shuffle($array);

    echo "<pre>";
    echo "Array de teste:" . PHP_EOL;
    print_r($array);
    echo "</pre>";

    natsort($array);

    echo "<pre>";
    echo "Natsort padrão:" . PHP_EOL;
    print_r($array);
    echo "</pre>";

    usort($array,function($a, $b) {

            $pathInfoA = pathinfo($a);
            $pathInfoB = pathinfo($b);

            if (preg_match('/([^\d]*)(0)([\d]+)/', $pathInfoA['filename'], $matches)) {

                $a = $matches[1] . $matches[3];

            } else {

                $a = $pathInfoA['filename'];

            }

            if (preg_match('/([^\d]*)(0)([\d]+)/', $pathInfoB['filename'], $matches)) {

                $b = $matches[1] . $matches[3];

            } else {

                $b = $pathInfoB['filename'];

            }

            return strnatcmp($a, $b);

        });

    echo "<pre>";
    echo "Custom Natsort:" . PHP_EOL;
    print_r($array);
    echo "</pre>";