3v4l.org

run code in 500+ PHP versions simultaneously
<?php $arrays = [ [101 => "Abbottabad"], [102 => "Abdul Hakim"], [103 => "Ahmed Pur East"] ]; $res = []; foreach($arrays as $array) { $res[key($array)] = reset($array); } print_r($res);
Output for 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 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
Array ( [101] => Abbottabad [102] => Abdul Hakim [103] => Ahmed Pur East )

preferences:
106.28 ms | 1624 KiB | 4 Q