RE: [PHP-DEV] PHP 4.0 Bug #7511 Updated: References are not properly reassigned with classes From: Michael Youngstrom (youngm <email protected>)
Date: 10/28/00

I think where Mike was mistaken was that he presumed that the new operator
would return a reference to the newly created object rather then a value.

Which is the source of another question and the topic of a number of bug
reports lately.

#7511
#7482
#7455
#7454

The problem is that it is not possible for the new operator to return a
reference. The ability, I believe, needs to be there. The question is
should it return a reference by default or only when explicitly requested.

//example by default
$joe = new foo(); //$joe will be populated with a reference to the
instantiated foo class;

//explicit example
$joe =& new foo(); //$joe requests a reference to the new object.

Either one would work fine. But the decision just needs to be made as to
which way to implement it.

Thanks for you help,
        youngm

-----Original Message-----
From: waldschrott <email protected> [mailto:waldschrott <email protected>]
Sent: Saturday, October 28, 2000 7:17 AM
To: php-dev <email protected>
Subject: [PHP-DEV] PHP 4.0 Bug #7511 Updated: References are not
properly reassigned with classes

ID: 7511
Updated by: waldschrott
Reported By: heathm <email protected>
Status: Closed
Bug Type: Class/Object related
Assigned To:
Comments:

no bug here, here´s what you did...

1) created instance of foo on uninitialized $bar
2) created a reference in array $list to $bar
(read the chapter "references explained in the manual" if
you don´t understand the following)
3) created instance of foo on $bar and it´s referenced array
element
4) created another reference in array $list to $bar

finally there are 3 structures beeing the same, $bar, array
element 1, array element 2

Previous Comments:
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[2000-10-28 08:13:21] heathm <email protected>
I found a rather strange problem with reference to objects. Take the
following:

<?php

class foo {
  var $Name;
  function foo($name) {
    $this->Name = $name;
  }
}

$bar = new foo('Mike');
$list[] =& $bar;
//unset($bar);
$bar = new foo('Jeremy');
$list[] =& $bar;

while(list($key, $val) = each($list))
  echo "<br>$key = $val->Name";

?>

When going through the loop and echoing the Name parameter the both return
Jeremy. If I unset $bar first (by uncommenting it) it works fine. I'm not
exactly sure what's going on but it is rather strange.

Mike

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

Full Bug description available at: http://bugs.php.net/?id=7511 

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