Passing an instance method as argument in PHP

Question

I would like to create a Listener class

class Listener {
    var $listeners = array();
    
    public function add(callable $function) {
        $this->li         


        

Answer 1

I don't think you can specify a callable this way...

Try

$listener->add(array($this, 'bar'));

And see http://php.net/manual/en/language.types.callable.php too.