Description:
------------
PHP allows to call instance methods using the {} syntax together with a string - 
such as $obj->{'my-method'} for example. This allows developers to call methods 
whose names are not valid PHP method names.

The same does not work with static method calls. 

Test script:
---------------
<?php
class Test{
    public static function __callStatic($method, $arguments)
	{
        echo $method . PHP_EOL;
    }
    public function __call($method, $arguments) 
	{
        echo $method . PHP_EOL;
    }
}

$method = 'method';

$test = new Test();

$test->method();
$test->$method();
$test->{'method'}();

Test::method();
Test::$method();
Test::{'method'}();


Expected result:
----------------
method
method
method
method
method
method

Actual result:
--------------
PHP Parse error:  syntax error, unexpected '{', expecting T_STRING or T_VARIABLE 
or '$' in Untitled.php on line 21