PHP 4.0 Bug #9005 Updated: Static classes sometimes have a $this pointer
| From: | zeev@php.net | Date: | Thu, 08 Mar 2001 10:51:37 +0000 |
| Subject: | PHP 4.0 Bug #9005 Updated: Static classes sometimes have a $this pointer | ||
| Groups: | php.dev | ||
| Request: | Send a blank email to php-dev+get-48227@lists.php.net to get a copy of this message | ||
ID: 9005
Updated by: zeev
Reported By: chuck@horde.org
Old-Status: Open
Status: Closed
Bug Type: Scripting Engine problem
Assigned To:
Comments:
class::method() isn't a static call in PHP (it isn't always a static call in C++ either).
The primary use for class::method() is actually calling methods from your parent class, not calling
'static methods' (the ability to create static classes and call their methods is pretty
much a positive 'side effect').
So, this is the intended behavior.
Previous Comments:
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[2001-01-30 13:39:15] chuck@horde.org
If you call a static method from within an object, the static method will inherit the $this pointer
of the calling object. This script demonstrates the problem:
<?php
error_reporting(E_ALL);
class StaticClass {
function doSomething() {
echo $this->data;
}
}
class Instantiated {
var $data;
function Instantiated($data) {
$this->data = $data;
StaticClass::doSomething();
}
}
$ob = new Instantiated('foo');
?>
This is rather confusing behavior - $this should be out of scope inside static methods no matter
what.
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