Online PHP editor | refs for BNCe5

<?php $ar = [ ['number' => '419-1'], ['number' => '302-1'], ['number' => '102-1'], ['number' => '102-11'], ['number' => '203-1'], ['number' => '508-1'], ['number' => '105-1'], ['number' => '102-2'], ['number' => '302-2'], ]; $arr = $ar; usort($arr, function($a, $b) { return strnatcmp($a['number'], $b['number']); }); var_export($arr); echo \PHP_EOL . \PHP_EOL . '---------'.\PHP_EOL . \PHP_EOL; array_multisort(array_column($ar, 'number'), SORT_ASC, SORT_NATURAL, $ar); echo var_export($ar);