minte9

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Get magic method

All magic methods must be declared public.

 
class A 
{
    public function __get($var) 
    {
        return 2;
    }
}

$a = new A();

echo $a->foo; // 2

You can keep track of variables which are not defined inside the class.

 
class myController
{
    private $_modelBroker = array();

    public function __get($var)
    {
        if (strstr($var, 'model')) {

            $modelKey = substr($var, 5);

            if (in_array($modelKey,
                    array_keys($this->_modelBroker))) { // registered

                return $this->_modelBroker[$modelKey];

            } else { // not registered

                eval('$model = new Model_'.$modelKey.'();');

                $this->_modelBroker[$modelKey] = $model;

                return $model;
            }
        }
    }
}

class Model_Number
{
    public $id = 123;
}

$controller = new myController();

echo $controller->modelNumber->id; // 123
    // _get is called, because modelNumber is undefined

The function names bellow are magical in PHP classes.

 
__construct(), __destruct(),
__call(), __callStatic(), 
__get(), __set(), 
__isset(), __unset(), 
__sleep(), 
__wakeup(), 
__toString(), 
__invoke(), 
__set_state(), 
__clone()
__debugInfo()