3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a1 = array( 'apple'=>1,'banana'=>2,'coconut'=> 3); $a2 = array( 'apple'=>2,'banana'=>3,'coconut'=> 4); echo "<pre>"; print_r(array_merge_recursive($a1,$a2)); echo "</pre>";

preferences:
39.3 ms | 402 KiB | 5 Q