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@ 2013-10-21T21:38:56Z

<?php
class p { 
    function call($cb) {
        var_dump(is_callable($cb),$cb());
    }
}

class c extends p { 
    protected function cb() {
        return "cb";
    } 

    function __construct() { 
        parent::call(array($this, "cb")); 
    }
}

$c = new c;

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
is_callable: documentation ( source)

preferences:dark modelive preview

43.62 ms | 402 KiB | 5 Q