Re: [Zend Engine 2] Calling static method from object also sets $this

phpsurf wrote:

that's right ! I'm currently having the same problem with PHP 4.1.1 ! I'm afraid this bug had never been seen before and that it should be sent to the PHP-DEV list

I guess Markus is refered to both ZE1's and ZE2's $this issue. IIRC, Stig pointed out the same issue is in ZE2 in ZE2 list. -- Yasuo Ohgaki

-----Original Message----- From: Markus Fischer [mailto:mfischer@guru.josefine.at] Sent: mercredi 17 avril 2002 14:00 To: engine2@lists.zend.com Subject: [Zend Engine 2] Calling static method from object also sets $this

    Hi,

    When calling a static method from an object, still the
    variable $this is set to an object (the caller obejct) and
    not NULL:

<?

    class parent_class {

        function parent_method() {
            var_dump($this);
            echo "class == " . get_class($this), "\n\n";
        }
    }

    class extended_class extends parent_class {

        function call_static_method() {
            parent_class::parent_method();
        }

        function call_parent_method() {
            parent::parent_method();
        }

        function call_method() {
            $this->parent_method();
        }
    }

    $o = new extended_class;
    $o->call_static_method();
    $o->call_parent_method();
    $o->call_method();
    parent_class::parent_method();

?> Output: object(extended_class)(0) { } class == extended_class object(extended_class)(0) { } class == extended_class object(extended_class)(0) { } class == extended_class NULL class ==

    Although call_static_method() calls a static method, the
    $this pointer is set in the method. This may work well for
    parent:: calls but seems questionable for normal class::
    calls.

    It works if parent_method() is called from a function scope
    ($this == NULL).

    This was originally pointed out by Richard Heyes for ZE1 and
    I verified it with ZE2.

    I just think, when issuing a call to a static method, $this
    should not be set. I may not foresee the implications with
    that (except BC), but it seems locigal to me not to define
    $this.

    regards,
        - Markus

-- Please always Cc to me when replying to me on the lists. GnuPG Key: http://guru.josefine.at/~mfischer/C2272BD0.asc "Mind if I MFH ?" "What QA did you do on it?" "the usual?" "ah... none :)" ______________________________________________________________________________ ifrance.com, l'email gratuit le plus complet de l'Internet ! vos emails depuis un navigateur, en POP3, sur Minitel, sur le WAP... http://www.ifrance.com/_reloc/email.emailif