1--TEST--
2ob_start() chunk_size: confirm buffer is flushed after any output call that causes its length to equal or exceed chunk_size.
3--FILE--
4<?php
5/*
6 * proto bool ob_start([ string|array user_function [, int chunk_size [, bool erase]]])
7 * Function is implemented in main/output.c
8*/
9
10function callback($string) {
11	global $callback_invocations;
12	$callback_invocations++;
13	$len = strlen($string);
14	return "f[call:$callback_invocations; len:$len]$string\n";
15}
16
17for ($cs=-1; $cs<10; $cs++) {
18  echo "\n----( chunk_size: $cs, output append size: 1 )----\n";
19  $callback_invocations=0;
20  ob_start('callback', $cs);
21  echo '1'; echo '2'; echo '3'; echo '4'; echo '5'; echo '6'; echo '7'; echo '8';
22  ob_end_flush();
23}
24
25for ($cs=-1; $cs<10; $cs++) {
26  echo "\n----( chunk_size: $cs, output append size: 4 )----\n";
27  $callback_invocations=0;
28  ob_start('callback', $cs);
29  echo '1234'; echo '5678';
30  ob_end_flush();
31}
32
33?>
34--EXPECTF--
35
36----( chunk_size: -1, output append size: 1 )----
37f[call:1; len:8]12345678
38
39----( chunk_size: 0, output append size: 1 )----
40f[call:1; len:8]12345678
41
42----( chunk_size: 1, output append size: 1 )----
43f[call:1; len:8]12345678
44
45----( chunk_size: 2, output append size: 1 )----
46f[call:1; len:2]12
47f[call:2; len:2]34
48f[call:3; len:2]56
49f[call:4; len:2]78
50f[call:5; len:0]
51
52----( chunk_size: 3, output append size: 1 )----
53f[call:1; len:3]123
54f[call:2; len:3]456
55f[call:3; len:2]78
56
57----( chunk_size: 4, output append size: 1 )----
58f[call:1; len:4]1234
59f[call:2; len:4]5678
60f[call:3; len:0]
61
62----( chunk_size: 5, output append size: 1 )----
63f[call:1; len:5]12345
64f[call:2; len:3]678
65
66----( chunk_size: 6, output append size: 1 )----
67f[call:1; len:6]123456
68f[call:2; len:2]78
69
70----( chunk_size: 7, output append size: 1 )----
71f[call:1; len:7]1234567
72f[call:2; len:1]8
73
74----( chunk_size: 8, output append size: 1 )----
75f[call:1; len:8]12345678
76f[call:2; len:0]
77
78----( chunk_size: 9, output append size: 1 )----
79f[call:1; len:8]12345678
80
81----( chunk_size: -1, output append size: 4 )----
82f[call:1; len:8]12345678
83
84----( chunk_size: 0, output append size: 4 )----
85f[call:1; len:8]12345678
86
87----( chunk_size: 1, output append size: 4 )----
88f[call:1; len:8]12345678
89
90----( chunk_size: 2, output append size: 4 )----
91f[call:1; len:4]1234
92f[call:2; len:4]5678
93f[call:3; len:0]
94
95----( chunk_size: 3, output append size: 4 )----
96f[call:1; len:4]1234
97f[call:2; len:4]5678
98f[call:3; len:0]
99
100----( chunk_size: 4, output append size: 4 )----
101f[call:1; len:4]1234
102f[call:2; len:4]5678
103f[call:3; len:0]
104
105----( chunk_size: 5, output append size: 4 )----
106f[call:1; len:8]12345678
107f[call:2; len:0]
108
109----( chunk_size: 6, output append size: 4 )----
110f[call:1; len:8]12345678
111f[call:2; len:0]
112
113----( chunk_size: 7, output append size: 4 )----
114f[call:1; len:8]12345678
115f[call:2; len:0]
116
117----( chunk_size: 8, output append size: 4 )----
118f[call:1; len:8]12345678
119f[call:2; len:0]
120
121----( chunk_size: 9, output append size: 4 )----
122f[call:1; len:8]12345678