ID:               36475
 Updated by:       [EMAIL PROTECTED]
 Reported By:      elmar dot hinz at team-red dot net
-Status:           Closed
+Status:           Bogus
 Bug Type:         Class/Object related
 Operating System: Linux/Debian
 PHP Version:      5.1.2
 New Comment:

Not a bug -> Bogus.


Previous Comments:
------------------------------------------------------------------------

[2006-02-21 18:10:57] elmar dot hinz at team-red dot net

It is not the behaviour what I would expect, but indeed no bug. So what
happens in detail? Short analysis of the 2 steps:

1.) On function call $ref get's an alias to the outside variable
$callback. 

2.) Before any alterations on this double named variable happen, $ref
is made an alias to a second variable $object (and gives up the fist
variable in the same moment).

Result: $callback and $object are not aliased to each other this way.

------------------------------------------------------------------------

[2006-02-21 13:50:32] [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

Think again about your code.


------------------------------------------------------------------------

[2006-02-21 13:12:14] elmar dot hinz at team-red dot net

Description:
------------
Cannot access original objects by call by reference.

function tryCallback(&$ref){
  $ref =& $this->object;  
}


Only a copies work:

function tryCallback(&$ref){
  $ref = $this->object;  
}


Reproduce code:
---------------
<?php
class myObject{ var $value = 'The original value'; }
function tryCallback(&$ref){
  global $object;
  $ref =& $object;  // in a class it would be: $ref =& $this->object;
  dump($ref, 'Before the proplem: The object is still here but will
fail from outside.');
}
function dump($var, $name){
  print '<p  style="background:#eeeeee;">' . $name . '</p>';
  if($var){ print '<pre style="color:green">'; print_r($var); print
'</pre>'; }
  else{ print '<p style="color:red"><strong>$var is
empty!!!</strong></p>'; }
}
$object = new myObject();
tryCallback($callback);
dump($callback, 'Here the object is missing in my test.');
$callback->value = 'Try to set a value.';
dump($callback, 'Ooops, what a funny object now.');
dump($object, 'This is the original object. Unaltered. No reference was
created.');
?>

Expected result:
----------------
Dump 1:

myObject Object
(
    [value] => The original value
)

Dump 2:

myObject Object
(
    [value] => The original value
)

[...]

Actual result:
--------------
Dump 1:

myObject Object
(
    [value] => The original value
)

Dump 2:

$var is empty!!!

[...]


------------------------------------------------------------------------


-- 
Edit this bug report at http://bugs.php.net/?id=36475&edit=1

Reply via email to