Description:
------------
There is namespace: jjroman_net when I call class_exist('\\jjroman_net\\MyClass'); the parameter of __autoload is `\jjroman_net\MyClass`
When I just type: new MyClass the parameter of __autoload is `jjroman_net\MyClass`

Reproduce code:
---------------
index1.php:
<?php
function __autoload($name) {
    var_dump($name);
    //require($name.'.php');
}
class_exists('\\jjroman_net\\MyClass');
?>
index2.php
<?php
function __autoload($name) {
    var_dump($name);
    //require($name.'.php');
}
$a = new \jjroman_net\MyClass.php;
?>

Expected result:
----------------
I expected unified way to call __autoload it's not matter if it will be \jjroman_net\MyClass or without the first slash but I don't like to push IF in autoload

Actual result:
--------------
index1.php: string(20) "\jjroman_net\MyClass"
index2.php: string(19) "jjroman_net\MyClass" 
(and fatal error ofcourse)