<?php $array = [ '2' => [ 'title' => 'Flower', 'order' => 3 ], '3' => [ 'title' => 'Rock', 'order' => 1 ], '4' => [ 'title' => 'Grass', 'order' => 2 ] ]; $keys = array_keys($array); array_multisort( array_column($array, 'order'), SORT_DESC, SORT_NUMERIC, $array, $keys ); $array = array_combine($keys, $array); print_r($array);
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