Question

Just wondering why something like this doesn’t work:

public function address($name){
    if(!isset($this->addresses[$name])){
        $address = new stdClass();
        $address->city = function($class = '', $style = ''){
            return $class;
        };          
        $this->addresses[$name] = $address;
    }
    return $this->addresses[$name];
}

Calling it like echo $class->address('name')->city('Class') should just echo Class, however I get Fatal error: Call to undefined method stdClass::city()

I can find a better way to do this, because this will get messy, but I’m wondering what I might be doing wrong there, or if PHP doesn’t support this and why.

Answer 1

PHP is right when invoke fatal error Call to undefined method stdClass::city() because object $class->address('name') has no method city.
Intead, this object has property city which is instance of Closure Class (http://www.php.net/manual/en/class.closure.php)
You can verify this: var_dump($class->address('name')->city)

I found the way to call this anonymous function is:

$closure = $class->address('name')->city;
$closure('class');

Hope this helps!