Problem with array of objects

[Hannu Tiitu]

Hi! I have a small problem with array and objects:

$a = new A();
$b = new A();
$c = new A();
$d = new A();
$e = new A();

$ar = array($a, $c, $d);

There is a method inside A, which would need the information, that is
that instance ($this) of A a member of array $ar.

I thought, that this could have been tested easily with

if (in_array($this , $ar)) ...

But it is not working.

Is there any easy solution for this?

Thanks,

H.

[David Rybach]

Re: Problem with array of objects

Hannu Tiitu wrote:[color=blue]
> Hi! I have a small problem with array and objects:
>
> $a = new A();
> $b = new A();
> $c = new A();
> $d = new A();
> $e = new A();
>
> $ar = array($a, $c, $d);
>
> There is a method inside A, which would need the information, that is
> that instance ($this) of A a member of array $ar.
>
> I thought, that this could have been tested easily with
>
> if (in_array($this , $ar)) ...
>
> But it is not working.
>
> Is there any easy solution for this?[/color]

If the instances of the class differ in their attributes it would be a way
to write a function like that:

function obj_in_array($n eedle, $haystack) {
foreach($haysta ck as $v) {
if($v === $needle) return true;
}
return false;
}

For more information about comparison of objects see:

http://www.php.net/manual/en/language.oop.object-comparison-php4.php

Regards,
David

[Hannu Tiitu]

Re: Problem with array of objects

David Rybach <david@rybach.d e> wrote...

Thanks a lot for the info! This was very helpful for me! H.

[Shawn Wilson]

Re: Problem with array of objects

Hannu Tiitu wrote:[color=blue]
>
> Hi! I have a small problem with array and objects:
>
> $a = new A();
> $b = new A();
> $c = new A();
> $d = new A();
> $e = new A();
>
> $ar = array($a, $c, $d);
>
> There is a method inside A, which would need the information, that is
> that instance ($this) of A a member of array $ar.
>
> I thought, that this could have been tested easily with
>
> if (in_array($this , $ar)) ...
>
> But it is not working.
>
> Is there any easy solution for this?[/color]

Is $ar a global? And is it declared as a global in your method of A?

Regards,
Shawn
--
Shawn Wilson
shawn@glassgian t.com

http://www.glassgiant.com

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