Description:
------------
Creating a new ReflectionFunction instance and then calling it's isDprecated function results in 

Fatal error: isDeprecated() cannot be called statically

This is only an issue on PHP 5.2, testing on 5.3 and 6 produce the expected result.

Reproduce code:
---------------
<?php
$rc = new ReflectionFunction('call_user_method');
var_dump($rc->isDeprecated());
?>


Expected result:
----------------
bool(true)

Actual result:
--------------
Fatal error: isDeprecated() cannot be called statically in C:\php5.2.12\test.php on line 3