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<?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);
Output for 7.1.25 - 7.1.32, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.31, 8.2.0 - 8.2.27, 8.3.0 - 8.3.15, 8.4.1 - 8.4.3
Array ( [0] => Array ( [user_id] => 8 [id] => 3 [Number] => 1 [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] => 10 [id] => 1 [Number] => 3 [Active] => 1 [Updated] => 2010-03-17 15:44:12 ) )

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