Reference or a Copy?

[xu]

Hi, i'm quite new with PHP.

I was wondering if i get a reference or a copy back when i try to
retrieve it at page2.php $foobar = $_SESSION['myobject'];

// page1.php

....
$myobject = new MyObject();
$_SESSION['myobject'] = $myobject;
....

// page2.php

....
$foobar = $_SESSION['myobject'];
....

[neur0maniak]

Re: Reference or a Copy?

That would appear to make a copy.

At the end of page2.php, you could have $_SESSION['myobject']=$foobar;
to copy it back. Or you could use $_SESSION['myobject'] in place of
every $foobar and it should work the same.


xu wrote:[color=blue]
> Hi, i'm quite new with PHP.
>
> I was wondering if i get a reference or a copy back when i try to
> retrieve it at page2.php $foobar = $_SESSION['myobject'];
>
> // page1.php
>
> ....
> $myobject = new MyObject();
> $_SESSION['myobject'] = $myobject;
> ....
>
> // page2.php
>
> ....
> $foobar = $_SESSION['myobject'];
> ....[/color]

[Huabi Xu]

Re: Reference or a Copy?

Thanks for your reply, it helped me alot with my insight of when php's
object reference is in place and when not.

I'm now going to test the & to see if i'm getting a reference or not.

// page2.php

....
$foobar =& $_SESSION['myobject']; ?
....

neur0maniak wrote:[color=blue]
> That would appear to make a copy.
>
> At the end of page2.php, you could have $_SESSION['myobject']=$foobar;
> to copy it back. Or you could use $_SESSION['myobject'] in place of
> every $foobar and it should work the same.
>
>
> xu wrote:
>[color=green]
>> Hi, i'm quite new with PHP.
>>
>> I was wondering if i get a reference or a copy back when i try to
>> retrieve it at page2.php $foobar = $_SESSION['myobject'];
>>
>> // page1.php
>>
>> ....
>> $myobject = new MyObject();
>> $_SESSION['myobject'] = $myobject;
>> ....
>>
>> // page2.php
>>
>> ....
>> $foobar = $_SESSION['myobject'];
>> ....[/color][/color]