3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = ['a' => 10, 'b' => 3, 'c' => 45]; $b = []; foreach ($a as $key => $value) { $b[$key] = 10 + $value; } var_dump($b); // prints $b

preferences:
32.94 ms | 404 KiB | 5 Q