Description:
------------
Considering a class that implements an interface and has methods that require many arguments. You may expect to make your life easier derivating this class and providing simpler methods.

Reproduce code:
---------------
<?php

interface i_foo {
        function fooize($str, $n);
}

class c_foo implements i_foo { /* painful ($class->fooize($str, $n)) */
        function fooize($str, $n) {
                echo "$str $n\n";
        }
}

class c_bar extends c_foo {
        function fooize($str) { /* simple ($class->fooize($str)) */
                $n = strlen($str);
                parent::fooize($str, $n);
        }
}

?>

Expected result:
----------------
This should not pose any kind of problem.

Actual result:
--------------
Fatal error: Declaration of c_bar::fooize() must be compatible with that of i_foo::fooize()