1--TEST--
2Serialize() must return a string or NULL
3--SKIPIF--
4<?php if (!interface_exists('Serializable')) die('skip Interface Serialzable not defined'); ?>
5--FILE--
6<?php
7/* Prototype  : proto string serialize(mixed variable)
8 * Description: Returns a string representation of variable (which can later be unserialized)
9 * Source code: ext/standard/var.c
10 * Alias to functions:
11 */
12/* Prototype  : proto mixed unserialize(string variable_representation)
13 * Description: Takes a string representation of variable and recreates it
14 * Source code: ext/standard/var.c
15 * Alias to functions:
16 */
17
18Class C implements Serializable {
19	public function serialize() {
20		return $this;
21	}
22
23	public function unserialize($blah) {
24	}
25}
26
27try {
28	var_dump(serialize(new C));
29} catch (Exception $e) {
30	echo $e->getMessage(). "\n";
31}
32
33echo "Done";
34?>
35--EXPECTF--
36C::serialize() must return a string or NULL
37Done
38