axy\callbacks: the callback extended format

• The library does not require any dependencies.
• Tested on PHP 5.4+, PHP 7, HHVM (on Linux), PHP 5.5 (on Windows).
• Install: composer require axy/callbacks.
• License: MIT.

Documentation

• Callback format
• Arguments binding
• Context binding
• How to use

Examples

function sum($a, $b)
{
    return $a + $b;
}

Standard callback:

$callback = new Callback('sum');

echo $callback(2, 2);

Binging arguments:

$callback = new Callback('sum', [3]);

echo $callback(4); // 3 + 4 = 7

Binging context:

class MyClass
{
    public function getEventHandler()
    {
        return new Callback([$this, 'onEvent'], ['click'], true);
    }

    private function onEvent($event)
    {
        echo 'Event '.$event.'!';
    }
}

$obj = new MyClass();
$handler = $obj->getEventHandler();

// click
$handler(); // "Event click!". Private method was called