ID: 33974
User updated by: php at koterov dot ru
Reported By: php at koterov dot ru
Status: Bogus
Bug Type: Output Control
Operating System: any
PHP Version: 4.3.11
New Comment:
I'll detalize why do I say all this words. It would be great to
MANUALLY process all output buffers with their callbacks at the end of
script - something like this:
foreach (array_reverse(ob_list_handlers()) as $h) {
$text = ob_get_contents(); ob_end_clean();
echo call_user_func($h, $text);
}
Why? Very simple: if I let the callbacks to be called automatically,
I'll loose ALL errors, warnings and notices in them, because errors are
suppress on standard OB callback execution. But, if I call all the
callbacks manually (see example above), it's OK with errors.
I use OB callbacks very often, an there are a lot of PHP code in them
(e.g. - HTML tag parsing, placeholder substitutions etc.). Callbacks is
a very powerful technique, but - almost undebuggable.
Maybe extend ob_get_status(true) adding valid callback references to
returned array?
Previous Comments:
------------------------------------------------------------------------
[2005-08-04 13:49:15] php at koterov dot ru
Very strange, because object-based callbacks works fine with
ob_start(). So I guess that full callback info is stored somewhere.
OK, debug purpose. But - maybe write it explicitly in documentation?
"This function is for debug purposes only. Do not try to use it for
manual callback execution - references will be wrong for object-based
callbacks."
------------------------------------------------------------------------
[2005-08-03 15:46:05] [EMAIL PROTECTED]
This is how the engine stores callbacks names.
ob_list_handlers() has nothing to do with it.
This functions is for debugging purposes only and there is nothing said
in the docs that it should return valid callbacks.
------------------------------------------------------------------------
[2005-08-03 15:35:21] php at koterov dot ru
There is nothing said about this behaviour in the documentation:
http://www.php.net/manual/ru/function.ob-list-handlers.php
And - if I cannot trust the result of ob_list_handlers() (I cannot - it
returns bogus handler names), is this function necessary at all?
------------------------------------------------------------------------
[2005-08-03 13:22:51] [EMAIL PROTECTED]
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to report
a bug at http://bugs.php.net/how-to-report.php
------------------------------------------------------------------------
[2005-08-03 12:35:45] php at koterov dot ru
Description:
------------
Seems ob_list_handlers() cannot return handlers represented as object
with method names (see ob_start(array(&$obj, 'F'))). It returns them as
"ClassName::MethodName", not as array(..., ...).
Reproduce code:
---------------
<?php
class C { function F($s) { return $s; } }
$obj = new C();
ob_start(array(&$obj, 'F'));
$list = ob_list_handlers();
var_dump($list);
?>
Expected result:
----------------
array(1) { [0]=> array(..., 'F') }
// where "..." is object $obj
Actual result:
--------------
array(1) { [0]=> string(4) "c::F" }
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=33974&edit=1
