3v4l.org

run code in 300+ PHP versions simultaneously
<?php $rows = [ ['a', 'x'], ['b'], ]; print_r(array_map('reset', $rows));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
Warning: reset(): Argument #1 ($array) must be passed by reference, value given in /in/UlIE3 on line 8 Warning: reset(): Argument #1 ($array) must be passed by reference, value given in /in/UlIE3 on line 8 Array ( [0] => a [1] => b )
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Array ( [0] => a [1] => b )
Output for 4.3.0
Parse error: parse error, unexpected '[' in /in/UlIE3 on line 3
Process exited with code 255.
preferences:
113.63 ms | 1514 KiB | 4 Q