Re: [PHP-DEV] Passing by reference From: Derick Rethans (d.rethans <email protected>)
Date: 11/27/00

Hi Andi,

is there a way so we can see the zend cvs commit messages?

Derick

Andi Gutmans wrote:
>
> Hi,
>
> I just commited a patch which lightens up the restrictions Zeev and I
> introduced a few weeks ago in the CVS tree of passing certain arguments to
> functions which declare the argument to be passed by reference.
> It's a big patch so please try and see if it works.
> If you have a function:
> function foo(&$a)
> {
> }
> The following can be passed to foo():
> a) A variable, i.e. foo($a)
> b) A new statement, i.e. foo(new foobar());
> c) A reference returned from a function, i.e.:
> function &bar()
> {
> $a = 5;
> return $a;
> }
> foo(bar());
>
> All other expressions are undefined and can not be passed by reference.
> For example:
> a)
> function bar() // Note the missing &
> {
> $a = 5;
> return $a;
> }
> foo(bar));
>
> b) foo($a = 5);
> c) foo(5);
>
> Please let me know if this solves some of the bugs people have been
> reporting with the current CVS tree.
>
> Andi
> ---
> Andi Gutmans <andi <email protected>>
> http://www.zend.com/
>
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Derick Rethans

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