ID: 21380
User updated by: [EMAIL PROTECTED]
Reported By: [EMAIL PROTECTED]
Status: Open
Bug Type: Class/Object related
Operating System: Linux (redhat)
PHP Version: 4.3.0
New Comment:
Certainly not a big deal but it was Jesus M. Castagnetto that asked me
to report this, not Stig. Thanks.
Previous Comments:
------------------------------------------------------------------------
[2003-01-02 22:20:38] [EMAIL PROTECTED]
(Stig asked me to report this.) Here's the code and the explanation
will follow:
--------------------------------------
class Error {
var $e = '';
function Error($msg) {
$this->e = $msg;
}
}
class Foo {
var $n;
function &Foo($n) {
if ($n < 0) {
// note use of assignment operator "="
$this = new Error('Foo does not like that
negative stuff');
} else {
$this->n = $n;
}
}
}
$a = new Foo(-1);
print_r($a);
Outputs:
error Object
(
[e] => Foo does not like that negative stuff
)
--------------------------------------
Currently, if one assignes to $this in the constructor using the
assignment operator (=) the $this reference will be overwritten and so
the constructor will return something other than the object requested
by the new operator.
This does not appear to apply to the assign by reference operator (=&)
that is, it doesn't appear to be possible to overwrite the reference in
$this with another reference. However, using "=" allows one to set
$this to anything; it doesn't even have to be an object and that item
will be returned from the new operator via the constructor.
The question is, is this a feature, and if so, will it continue to be
so? Or, is it a bug? If it's a feature it makes returning a PEAR error
object quite simple and furthermore I have seen some PEAR code (can't
remember where exactly) that uses this feature so if it is a bug that
will have to be fixed too. I would like to know if this can be relied
upon into the future.
'./configure' '--prefix=/usr/local' '--with-pspell' '--with-imap'
'--with-imap-ssl' '--with-gettext'
'--with-apache=/usr/local/src/apache_1.3.27' '--with-mysql=/usr'
'--enable-force-cgi-redirect' '--enable-bcmath' '--enable-discard-path'
'--enable-pear' '--with-kerberos' '--with-zlib' '--enable-ftp'
'--with-mm' '--enable-force-cgi-redirect'
Thanks,
Matt Friedman.
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=21380&edit=1
