in php4 $this gets passed in All static method calls ,as if they where
parent::sss() - so statically calling one object method from another
object instance will take '$this' with it..
Last word on this 'feature/bug' is that it will be removed in PHP5, (bit
of a bugger - I'm sure some of my old code relied on it ;)
Regards
Alan
Josh Fuhs wrote:
> Hello,
>
> I'm getting a problem with $this being defined where it shouldn't be. The code
> that I'm writing is a little weird in order to compensate for the lack of some
> OO features in PHP4.
>
> The PHP script at the bottom should give the behavior I'm referring to.
>
> Is PHP5 in a more-or-less stable state? Are PHP4 extensions completely
> compatible with PHP5?
>
> Josh
>
> <?php
>
> /* No static attributes in PHP4. */
> $static_class1=NULL;
>
> class Class1{
> var $var1;
> function Class1(){ $this->var1=0; }
>
> function init(){
> global $static_class1;
> $static_class1 = new Class1();
> }
>
> function getVar(){
> /* Check for $this. This is a way of making a static method
> and a regular method with the same name. */
> /* $this is defined here directly after called from the
> Class2 constructor. */
> if(isset($this)){
> return $this->var1;
> } else {
> global $static_class1;
> $static_class1->getVar();
> }
> }
> }
>
> class Class2{
> function Class2(){
> $a=Class1::getVar();
> }
> }
>
> Class1::init();
> $a=new Class2();
>
> ?>
>
>
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