Online PHP editor | refs for 7sP3S

@ 2014-06-09T13:29:58Z

<?php

function registerCallback(callable $method) {
    // do something with $method

    var_dump($method);
}
 
class A {
    public function __construct() {
        registerCallback([$this, "cb"]);
    }
    public function cb() {
        // do somethin upon being invoked  
    }
}

new A();