3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $fruits = array("d" => "lemon", "a" => "orange", "b" => "banana", "c" => "apple"); function pram_alter($array, $key) { $params="$$key = '$array';\n"; } array_walk($fruits, 'pram_alter'); echo $params; ?>
based on fEdfH
Output for 5.0.4 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Notice: Undefined variable: params in /in/022M0 on line 10
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: params in /in/022M0 on line 10