3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = array( array("5","3","21"), array("0.5","3","may"), array("2.2","3","sport"), ); //print_r($array); function subval_sort($a,$subkey) { foreach($a as $k=>$v) { $b[$k] = strtolower($v[$subkey]); } asort($b); foreach($b as $key=>$val) { $c[] = $a[$key]; } return $c; } $result = subval_sort($array, 0); print_r($result);
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 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 ( [0] => Array ( [0] => 0.5 [1] => 3 [2] => may ) [1] => Array ( [0] => 2.2 [1] => 3 [2] => sport ) [2] => Array ( [0] => 5 [1] => 3 [2] => 21 ) )
preferences:
283.88 ms | 406 KiB | 459 Q