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Posted by groups2 on 10/25/07 18:34
On Oct 25, 2:05 pm, JustinCarmony <carm...@gmail.com> wrote:
> On Oct 25, 11:50 am, grou...@reenie.org wrote:
>
>
>
> > Can someone please explain the results below
> > We switched to PHP 5
> > if I make a copy of an object, and then change the variable inside the
> > object the change is reflected in the copy.
>
> > Either the copy is a reference to the object or the variable inside
> > the object is a static variable, I'm not sure what is going on, but It
> > doesn't seem like it should be doing that. Is that because of a
> > setting on the server or something ?
>
> > <?
>
> > $label=new myObj();
> > $label->settext('the text');
>
> > $copy=$label;
> > print_r($copy);
> > $label->settext('different text');
> > print_r($copy);
>
> > class myObj{
> > var $text;
> > function settext($text){
> > $this->text=$text;
> > }
>
> > }
>
> > ?>
> > results:
> > myObj Object
> > (
> > [text] => the text
> > )
> > myObj Object
> > (
> > [text] => different text
> > )
>
> All objects in PHP 5, if I'm not mistaken, are always passed by
> reference. Example:
> <?php
>
> class MyClass
> {
> public $myVar;
>
> function __construct()
> {
> $this->myVar = 1;
> }
>
> }
>
> $class1 = new MyClass();
>
> $class2 = $class1;
>
> $class1->myVar = 2;
>
> echo $class2->myVar; // Outputs 2
>
> ?>
>
> If you want to make a copy of an object, so its a new object and not a
> reference is to use the clone keyword like this:
>
> <?
>
> class MyClass
> {
> public $myVar;
>
> function __construct()
> {
> $this->myVar = 1;
> }
>
> }
>
> $class1 = new MyClass();
>
> $class2 = clone $class1;
>
> $class1->myVar = 2;
>
> echo $class2->myVar;
>
> ?>
>
> You can also explicitly code what is to happen when an object is
> cloned by using the __clone() class function. You can read more here:http://us3.php.net/manual/en/language.oop5.cloning.php
>
> Carmony
bummer. What I have done is create objects with numerous properties
and a function to set 1 property and then return itself.
$label=new geocellobj();
$label->setalign('right');
$label->setvalign('middle');
$label->setstyle('border:0;');
array($label->settext('unique test'), $label->settext('different
text));
I don't think cloning will help me.
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