1--TEST--
2ZE2 An interface must be implemented
3--FILE--
4<?php
5
6interface if_a {
7    function f_a();
8}
9
10class derived_a implements if_a {
11}
12
13?>
14--EXPECTF--
15Fatal error: Class derived_a contains 1 abstract method and must therefore be declared abstract or implement the remaining methods (if_a::f_a) in %s on line %d
16