Changing two instances of classes

[SUPERUSER]

This code works in PHP4:

 $temp = $first_instance_of_class;
 $first_instance_of_class = $second_instance_of_class;
 $second_instance_of_class = $temp; 

But it doesn't work on PHP5.

Is there any solution. Thanks in advance.

[sweatje]

see cloning

[SUPERUSER]

I've already tried using cloning like this:

$temp = clone $first_instance_of_class;
$first_instance_of_class = clone $second_instance_of_class;
$second_instance_of_class = clone $temp;

But it does't work either.

[sweatje]

Why is the code not working for you. I don't think you even need cloning really:

class t {}

$one = new t;
$one->val = 'one';

$two = new t;
$two->val = 'two';

/*
var_dump($one, $two);

object(t)#1 (1) {
  ["val"]=>
  string(3) "one"
}
object(t)#2 (1) {
  ["val"]=>
  string(3) "two"
}
*/

$temp = $one;
$one = $two;
$two = $temp;

/*
var_dump($one, $two);

object(t)#2 (1) {
  ["val"]=>
  string(3) "two"
}
object(t)#1 (1) {
  ["val"]=>
  string(3) "one"
}

*/ 

[mjlivelyjr]

sweatje's right. Just tested that on my internal php5 server and worked fine.

Thank god we don't have to do pointer arithmetic in PHP

[SUPERUSER]

Yes, you' right the code above is working perfectly.

Thank you very much for the quick response.