#25580 [WFx]: set_error_handler to a class/method resets class properties when error occurs

[sniper]

 ID:               25580
 Updated by:       [EMAIL PROTECTED]
 Reported By:      paul dot liversidge at recycledpixels dot com
 Status:           Wont fix
 Bug Type:         Class/Object related
 Operating System: Windows XP
 PHP Version:      4.3.2
 New Comment:

And this would make it work as you expect too:

$err =& new ErrorHandler;



Previous Comments:
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[2003-09-20 18:12:59] [EMAIL PROTECTED]

Fixed in PHP 5, won't fix in PHP 4. 

See also: http://fi.php.net/manual/en/language.oop.newref.php


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[2003-09-17 16:05:02] paul dot liversidge at recycledpixels dot com

If I add a new method to the class, activate (see below), remove the
constructor method and call this new function immediately after
instantiating the class, i.e. $err->activate (); it all works fine as
well.

  function activate () {
    $this->old_error_handler = set_error_handler (array (&$this,
'handle_error'));
  }

It seems to be something related to setting the error handler in the
constructor method.

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[2003-09-17 15:28:50] paul dot liversidge at recycledpixels dot com

Description:
------------
I set the error handler to point at a class/method and then change some
of the class variables. Debugging lines and method confirm the class
variable has occurred. When I then trigger an error by echo'ing an
uninitialized variable the error handler resets or reinstantiates the
class.

If $use_me is initialized in the constructor instead of being defined
as a 'constant', it makes no difference as the value at the time of an
error is NULL, whatever is defined in the core class code.

If the set_error_handler function is called from line 3, i.e.
set_error_handler (array (&$err, 'handler_error')), it all works fine.

Reproduce code:
---------------
<?
$err = new ErrorHandler;

$err->use_me = true;
echo ("[1:{$err->use_me}]");
$err->test ();

echo $fred;

class ErrorHandler {
  var $use_me = 4;
  
  function ErrorHandler () { 
    set_error_handler (array (&$this, 'handle_error'));
  }  

  function test () {
    echo ("[2:{$this->use_me}]");
  }  

  function handle_error ($number, $message, $file, $line, $context) {
    echo ("[3:{$this->use_me}]");
    echo ("Error $number");
  }  
}
?>

Expected result:
----------------
[1:1][2:1][3:1]Error 8

Actual result:
--------------
[1:1][2:1][3:4]Error 8


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Edit this bug report at http://bugs.php.net/?id=25580&edit=1