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

On Wed, Apr 17, 2002 at 10:26:04PM +0900, Yasuo Ohgaki wrote : > 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 $this issue. > IIRC, Stig pointed out the same issue is in ZE2 in ZE2 list. I did a quick search (maybe it was too quick) if this came up before. What was the result? - Markus > > -- > Yasuo Ohgaki > > > > >-----Original Message----- > >From: Markus Fischer [mailto:mfischer@guru.josefine.at] > >Sent: mercredi 17 avril 2002 14:00 > >To: engine2@lists.zend.com > >Subject: [Zend Engine 2] Calling static method from object also sets > >$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 > > > > > > -- 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 :)"