Online PHP editor | refs for LpIZK

<?php namespace Test; class A { public function b(callable $b) { $b(); } public function c(int $c) { } public function d() { echo 'Hello, World' . PHP_EOL; } } $foo = new Foo(); echo is_callable(array($foo, 'd')) . PHP_EOL; $foo->b(array($foo, 'd')); $foo->c(1); $foo->c('a');