3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = [ ["id" => 1], ["id" => 2] ]; $f = array_map(function(&$v){ return $v+["name" => "rk"]; }, $a); print_r($f);
Output for 8.4.1 - 8.4.14
Warning: {closure:/in/0pJNW:7}(): Argument #1 ($v) must be passed by reference, value given in /in/0pJNW on line 7 Warning: {closure:/in/0pJNW:7}(): Argument #1 ($v) must be passed by reference, value given in /in/0pJNW on line 7 Array ( [0] => Array ( [id] => 1 [name] => rk ) [1] => Array ( [id] => 2 [name] => rk ) )
Output for 8.2.0 - 8.2.29, 8.3.0 - 8.3.27
Warning: {closure}(): Argument #1 ($v) must be passed by reference, value given in /in/0pJNW on line 7 Warning: {closure}(): Argument #1 ($v) must be passed by reference, value given in /in/0pJNW on line 7 Array ( [0] => Array ( [id] => 1 [name] => rk ) [1] => Array ( [id] => 2 [name] => rk ) )
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.33
Warning: {closure}(): Argument #1 ($v) must be passed by reference, value given in /in/0pJNW on line 9 Warning: {closure}(): Argument #1 ($v) must be passed by reference, value given in /in/0pJNW on line 9 Array ( [0] => Array ( [id] => 1 [name] => rk ) [1] => Array ( [id] => 2 [name] => rk ) )
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
Array ( [0] => Array ( [id] => 1 [name] => rk ) [1] => Array ( [id] => 2 [name] => rk ) )
preferences:
113.79 ms | 412 KiB | 5 Q