3v4l.org

run code in 300+ PHP versions simultaneously
<?php function square($n) { // Check if the item is a number if(is_numeric($n)) $n = ($n * $n); // Yes, square it else $n = "Not a number"; // No, replace with this } // Initialize the array $array = array(0, 48, 22, 90, 44, 9, 222, 'Iamzheasshole', 101); // Walk through the array, called the square function for every item array_walk($array, 'square'); // Output the array print_r($array);
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 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 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] => 0 [1] => 48 [2] => 22 [3] => 90 [4] => 44 [5] => 9 [6] => 222 [7] => Iamzheasshole [8] => 101 )
preferences:
239.21 ms | 406 KiB | 371 Q