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<?php $resultsArray = array( array('sort'=>1520546956, 'row'=>'row 0 data'), array('sort'=>1521047928, 'row'=>'row 1 data'), array('sort'=>1520525366, 'row'=>'row 2 data'), array('sort'=>1520525227, 'row'=>'row 3 data') ); $sortValues = array_column($resultsArray, 'sort'); array_multisort($sortValues, SORT_ASC, $resultsArray); print_r($resultsArray);
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
Array ( [0] => Array ( [sort] => 1520525227 [row] => row 3 data ) [1] => Array ( [sort] => 1520525366 [row] => row 2 data ) [2] => Array ( [sort] => 1520546956 [row] => row 0 data ) [3] => Array ( [sort] => 1521047928 [row] => row 1 data ) )

preferences:
138.65 ms | 409 KiB | 5 Q