3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = [ 'A1' => [1,0,0,0,0,0,0,0,0,0], 'A2' => [1,1,0,0,0,0,0,0,0,0], 'A3' => [0,0,0,0,0,0,0,0,0,0] ]; var_export( array_map( fn(...$col) => array_sum($col), ...array_values($array) ) );
Output for 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
array ( 0 => 2, 1 => 1, 2 => 0, 3 => 0, 4 => 0, 5 => 0, 6 => 0, 7 => 0, 8 => 0, 9 => 0, )
preferences:
67.03 ms | 406 KiB | 5 Q