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Doc Bug #60243 Add way to specify output buffering chunk size of 1
Submitted: 2011-11-08 15:16 UTC Modified: 2011-11-11 13:18 UTC
From: artificialmagic at hotmail dot com Assigned: aharvey (profile)
Status: Closed Package: Documentation problem
PHP Version: 5.3.8 OS:
Private report: No CVE-ID: None
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 [2011-11-08 15:16 UTC] artificialmagic at hotmail dot com 
Description:
------------
ob_implicit_flush does not do anything in CLI. This script never produces output:

ob_start();
ob_implicit_flush(true);
for (;;) echo '.';

A 1-byte buffer would work around it, except that specifying a chunk_size of 1 to ob_start is taken to mean 4 kilobytes. As a workaround, please make a chunk_size of -1 to ob_start a synonym for a real 1, so that output buffering can be used for filtering or for redirection without actual delay in output. Currently the smallest size that can be specified is 2 bytes, which can cause a potentially infinite wait for an extra byte.

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 [2011-11-08 15:19 UTC] artificialmagic at hotmail dot com 
Here's a proper test script. This produces [4096][4096][4096][4096][4096]...

ob_start(function($x) { return '[' . strlen($x) . ']'; }, 1);
for (;;) echo '.';

So I'd like this to produce [1][1][1][1][1][1]....

ob_start(function($x) { return '[' . strlen($x) . ']'; }, -1);
for (;;) echo '.';
 [2011-11-11 13:11 UTC] aharvey@php.net 
This has actually been fixed in PHP 5.4 already as part of the output layer 
improvements: a chunk size of 1 now really means 1.

I'll morph this into a documentation bug, because it's currently not noted in the 
manual or in the upgrade notes.
 [2011-11-11 13:11 UTC] aharvey@php.net
-Status: Open +Status: Assigned -Type: Feature/Change Request +Type: Documentation Problem -Package: Output Control +Package: Documentation problem -Assigned To: +Assigned To: aharvey
 [2011-11-11 13:13 UTC] aharvey@php.net 
Automatic comment from SVN on behalf of aharvey
Revision: http://svn.php.net/viewvc/?view=revision&revision=319050
Log: Note the change in ob_start() chunk size behaviour mentioned in doc bug #60243
(Add way to specify output buffering chunk size of 1).
 [2011-11-11 13:18 UTC] aharvey@php.net 
Automatic comment from SVN on behalf of aharvey
Revision: http://svn.php.net/viewvc/?view=revision&revision=319051
Log: Fix doc bug #60243 (Add way to specify output buffering chunk size of 1).
 [2011-11-11 13:18 UTC] aharvey@php.net
-Status: Assigned +Status: Closed
 [2011-11-11 13:18 UTC] aharvey@php.net 
This bug has been fixed in the documentation's XML sources. Since the
online and downloadable versions of the documentation need some time
to get updated, we would like to ask you to be a bit patient.

Thank you for the report, and for helping us make our documentation better.
 
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