3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = array(); $arr["a"] = "A"; $arr["b"] = "B"; /*$str = array_filter($arr, function($e1){ echo $e1; return $e1; });*/ $str = array_search("A", $arr); var_dump($str);

preferences:
44.01 ms | 402 KiB | 5 Q