3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { protected static function bar($arg) { return $arg * 1; } protected static $map = [ 'a' => 1, 'b' => 2, 'c' => 3, 'd' => 4, 'e' => 5 ]; public static function test() { $foo = 'e'; if (isset(self::$map[$foo])) { $b = self::bar(self::$map[$foo]); } var_dump($b); } } Foo::test();

preferences:
33.54 ms | 402 KiB | 5 Q