Online PHP editor | refs for hrOh3

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