3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array("a" => "apple", "b" => "banana"); $b = array("a" => "pear", "b" => "strawberry", "c" => "cherry"); print_r($a + $b); // Union of $a and $b

preferences:
30.36 ms | 402 KiB | 5 Q