[DOC-BUGS] Doc #64312 [Com]: set_error_handler always return handler if called inside an error_handler

Edit report at https://bugs.php.net/bug.php?id=64312&edit=1

 ID:                 64312
 Comment by:         Steven268Danner at outlook dot com
 Reported by:        php at maisqi dot com
 Summary:            set_error_handler always return handler if called
                     inside an error_handler
 Status:             Analyzed
 Type:               Documentation Problem
 Package:            *General Issues
 Operating System:   Win7 32 bits
 PHP Version:        5.4.12
 Block user comment: N
 Private report:     N

 New Comment:

Thank you for sharing such an informative post with us. (https://github.com)(https://www.the-disneyhub.com)


Previous Comments:
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[2021-09-01 12:31:31] [email protected]

> I therefore suggest to convert this bug into a documentation issue.

ACK

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[2016-02-17 12:42:04] php at maisqi dot com

This is old, and I think it can be considered as acceptable behaviour. I therefore suggest to convert this bug into a documentation issue. I think the documentation should describe what happens when there's an error or warning inside a error handler, unless set_error_handler() inside it.

------------------------------------------------------------------------
[2013-02-28 02:41:18] [email protected]

before calling to user error handler,  PHP will set empty to 
EG(uesr_error_handler) in case of recursivly call to error handler if there is 
some error in the error_handler function self.

IMO this is a trivial bug, if we want to to fix this, maybe add a new 
EG(origin_user_error_handler)...

------------------------------------------------------------------------
[2013-02-27 15:45:43] php at maisqi dot com

Test script: http://maisqi.com/outros/bugs/php/64312

------------------------------------------------------------------------
[2013-02-27 15:43:04] php at maisqi dot com

Description:
------------
If you set an error handler when inside an error handling function, set_error_handler will always return NULL.

Test script:
---------------
<pre>
<?php

function first_handler () {
		echo "  first_handler\n";
		echo '     Set to second handler: <strong>', gettype (set_error_handler ('second_handler')), "</strong>\n";
		echo "\n\n", '$y = $o', "\n";
		$y = $o;
}
function second_handler () {
		echo "  second_handler\n";
}

set_error_handler ('first_handler');
echo '$x = $y', "\n";
$x = $y;
echo '     Set to other handler: <strong>', gettype (set_error_handler (function(){})), "</strong>\n";


Expected result:
----------------
set_error_handler should return the name of the error handling function, which in this case would be the name of the running function.

Actual result:
--------------
It just returns null.


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Edit this bug report at https://bugs.php.net/bug.php?id=64312&edit=1