Online PHP editor | refs for IsAlX

<?php $array = Array ( 0 => Array ( 'user_id' => 10, 'id' => 1, 'Number' => 3, 'Active' => 1, 'Updated' => '2010-03-17 15:44:12', ), 1 => Array ( 'user_id' => 9, 'id' => 2, 'Number' => 2, 'Active' => 1, 'Updated' => '2010-03-17 15:44:12', ), 2 => Array ( 'user_id' => 8, 'id' => 3, 'Number' => 1, 'Active' => 1, 'Updated' => '2010-03-17 15:44:12', ) ); array_multisort(array_map(function($element) { return $element['user_id']; }, $array), SORT_ASC, $array); print_r($array);