Edit report at https://bugs.php.net/bug.php?id=55038&edit=1
ID: 55038
Comment by: dexen dot devries at gmali dot com
Reported by: rasmus at mindplay dot dk
Summary: inconsistent error-handling for $this
Status: Open
Type: Bug
Package: Class/Object related
Operating System: Win7
PHP Version: 5.3.6
Block user comment: N
Private report: N
New Comment:
Note, the closure and creation of another object instance are irrelevant. Two
simpler reproduction scripts -- one uses anonymous function, the other plain
function.
<?php
$foo = function($this)
{
var_dump($this); // this will work!
var_dump($this->bar); // this will blow up
};
$foo(new stdclass);
?>
<?php
function bar($this)
{
var_dump($this); // this will work!
var_dump($this->bar); // this will blow up
}
bar(new stdclass);
?>
Expected result: both uses of $this and $this->bar behave in similar way.
Actual result: PHP complains only on $this->bar.
Previous Comments:
------------------------------------------------------------------------
[2011-06-12 03:53:57] rasmus at mindplay dot dk
Description:
------------
$this is not generally allowed outside an object context, but sometimes it is.
I discovered this while trying to write a cheeky little base-class that would
allow you to decorate objects with new methods, at run-time.
I would have gotten away with it, too - and I still could of course, only I
would
have to break from the convention of $this, and naming the context-object
something else, which kind of sucks.
Test script:
---------------
<?php
$foo = function($this)
{
var_dump($this); // this will work!
};
$foo('bar');
// now an object:
class Test
{
public $foo = 'bar';
}
$test = new Test;
// and another closure:
$ouch = function($this)
{
var_dump($this->bar); // this will blow up
};
$ouch($test);
Expected result:
----------------
The two examples should either fail consistently, or succeed consistently.
>From my point of view, why should I not be allowed to have a local variable
>named
$this if I wanted to? There's nothing special or magical about this variable,
besides the fact that it gets automatically assigned on call.
Actual result:
--------------
The second example fails.
------------------------------------------------------------------------
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Edit this bug report at https://bugs.php.net/bug.php?id=55038&edit=1
