3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Bar { public static function foo() { $array1 = array("a"=>1, "b"=>2, "c"=>3, "d"=>4, "e"=>5); print_r(array_filter($array1, 'Bar::baz')); } private static function baz($var) { return($var & 1); } } Bar::foo();

preferences:
35.6 ms | 402 KiB | 5 Q