Bug #12905 Updated: "return" returns a copy of an object instead of a reference
| From: | olli at ukgamer dot net | Date: | Wed, 22 Aug 2001 16:20:16 +0000 |
| Subject: | Bug #12905 Updated: "return" returns a copy of an object instead of a reference | ||
| References: | 1 | Groups: | php.dev php.doc |
| Request: | Send a blank email to php-dev+get-64056@lists.php.net to get a copy of this message | ||
ID: 12905
User updated by: olli@ukgamer.net
Reported By: olli@ukgamer.net
Status: Open
Old Bug Type: Scripting Engine problem
Bug Type: Documentation problem
Operating System: Slackware 7
PHP Version: 4.0.6
New Comment:
renaming the function:
function AddChild(...
to
function &AddChild(...
makes return return by reference instead of by value, i didnt think to do this so it appears its my
fault:)
i've changed this bug to a documentation problem tho cos i cant find any reference to this in
the docs.
Previous Comments:
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[2001-08-22 12:13:08] olli@ukgamer.net
<?
Class ChildClass {
var $value;
function ChildClass($value){
$this->value = $value;
}
}
Class ParentClass {
var $children;
function ParentClass(){
$this->children = array();
}
function AddChild($value){
$child = &new ChildClass($value);
array_push($this->children, &$child);
return $child;
}
}
$p1 = &new ParentClass();
$c1 = &$p1->AddChild('set in constructor');
$c1->value = 'set elsewhere';
echo "the reference to the object created in AddBand and stored in the parentclass' array
is different to that returned by the AddBand function<br>";
echo $p1->children[0]->value."<br>";
echo $c1->value;
?>
"return" is returning a copy of the object created in parentclass->AddChild instead of
a reference. "return &$object" is flagged as invalid by the php interpreter.
thanks a lot
olli holliday
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Edit this bug report at http://bugs.php.net/?id=12905&edit=1