#49987 [Opn->Bgs]: __clone and __toString behave inconsistently
| From: | johannes@php.net | Date: | Sat, 24 Oct 2009 22:26:26 +0000 |
| Subject: | #49987 [Opn->Bgs]: __clone and __toString behave inconsistently | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-143913@lists.php.net to get a copy of this message | ||
ID: 49987
Updated by: johannes@php.net
Reported By: queenzeal at gmail dot com
-Status: Open
+Status: Bogus
Bug Type: Feature/Change Request
PHP Version: 5.3.0
New Comment:
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
Calling $obj->__clone(); would work on the $obj instance which won't be
the usual aim. Calling $obj->__toString() is fine to work on the $obj
instance.
Previous Comments:
------------------------------------------------------------------------
[2009-10-24 20:43:03] queenzeal at gmail dot com
Description:
------------
__toString() can be called directly but __clone() cannot. It seems
like this behavior ought to be consistent. Either both can be called
directly or neither can be called directly.
__clone()'s current behavior is documented in
<http://php.net/language.oop5.cloning> with
the following:
"An object's __clone() method cannot be called directly."
The only reason I can figure for that is that without it, it'd be
possible to clone a cloned object redundantly. eg. $a = clone
$b->__clone(). That said, it seems to me like this can be done,
already, with $a = clone clone $b, so that seems like a non-issue.
Reproduce code:
---------------
class a
{
function __toString() {
return 'a';
}
function __clone() {
return this;
}
}
$a = new a();
echo "$a\r\n";
echo $a->__toString() . "\r\n";
$b = clone $a;
$b = $a->__clone();
Expected result:
----------------
a
a
Actual result:
--------------
Fatal error: Cannot call __clone() method on objects - use 'clone $obj'
instead
in C:\php\test.php on line 20
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=49987&edit=1