1--TEST--
2session_set_save_handler(): optional closures not set again in second call
3--INI--
4session.use_strict_mode=1
5session.name=PHPSESSID
6session.serialize_handler=php_serialize
7--EXTENSIONS--
8session
9--FILE--
10<?php
11
12$data = [];
13
14ob_start();
15function open($path, $name): bool {
16    echo 'Open', "\n";
17    return true;
18}
19function create_sid(): string {
20    echo 'Create SID OLD', "\n";
21    return 'OLD_ID';
22}
23function read($key): string|false {
24    echo 'Read', "\n";
25    global $data;
26    return serialize($data);
27}
28function write($key, $val): bool {
29    echo 'Write', "\n";
30    global $data;
31    $data[$key] = $val;
32    return true;
33}
34function close(): bool {
35    echo 'Close', "\n";
36    return true;
37}
38function destroy($id): bool {
39    echo 'Destroy', "\n";
40    return true;
41}
42function gc($lifetime): bool {
43    return true;
44}
45function createSid(): string {
46    echo 'Create SID NEW', "\n";
47    return 'NEW_ID';
48}
49function validateId($key): bool {
50    echo 'Validate ID', "\n";
51    return true;
52}
53function updateTimestamp($key, $data): bool {
54    echo 'Update Timestamp', "\n";
55    return true;
56}
57
58session_set_save_handler('open', 'close', 'read', 'write', 'destroy', 'gc', 'create_sid', 'validateId', 'updateTimestamp');
59session_start();
60
61$_SESSION['foo'] = "hello";
62
63session_write_close();
64session_unset();
65
66echo "New handlers:\n";
67session_set_save_handler("open", "close", "read", "write", "destroy", "gc");
68session_start();
69var_dump($_SESSION);
70$_SESSION['bar'] = "world";
71session_write_close();
72
73ob_end_flush();
74?>
75--EXPECT--
76Open
77Create SID OLD
78Read
79Write
80Close
81New handlers:
82Open
83Validate ID
84Read
85array(1) {
86  ["OLD_ID"]=>
87  string(28) "a:1:{s:3:"foo";s:5:"hello";}"
88}
89Write
90Close
91