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<?php $data = array( "1"=>array( "id"=>1, "name"=>"Test #1", "listorder"=>1), "6"=>array( "id"=>6, "name"=>"Test #1", "listorder"=>3), "2"=>array( "id"=>2, "name"=>"Test #2", "listorder"=>2) ); uasort($data,function($a,$b){ return strcmp($a["listorder"],$b["listorder"]); }); print_r($data);
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Array ( [1] => Array ( [id] => 1 [name] => Test #1 [listorder] => 1 ) [2] => Array ( [id] => 2 [name] => Test #2 [listorder] => 2 ) [6] => Array ( [id] => 6 [name] => Test #1 [listorder] => 3 ) )

preferences:
249.1 ms | 404 KiB | 335 Q