Re: [PHP-DEV] Only variables or references can be returned by reference

[Andi Gutmans]

That should be fine. The following isn't:

function foo() {
    $x = 1;
    return $x;
}
function &bar() {
    return foo();
}
Note: foo isn't returning by reference.

Andi

At 11:12 AM 1/12/2004 -0500, Daniel Convissor wrote:
On Mon, Jan 12, 2004 at 06:06:22PM +0200, Andi Gutmans wrote:
> At 10:39 AM 1/12/2004 -0500, Daniel Convissor wrote:
> >On Mon, Jan 12, 2004 at 09:05:12AM +0200, Andi Gutmans wrote:
> >>
> >> b) A function which returned a variable by reference couldn't be 
returned
> >> by reference. I think this one is probably OK to code.
> >
> >But, does this cause memory corruption problems in PHP 4?
>
> If it's returned by reference consistently then I believe it doesn't.

I'm uncertain what you mean.  For example, I'm guessing this is NOT okay?

function &foo() {
    $x = 1;
    return $x;
}
function &bar() {
    return foo();
}
function blah() {
    // problem in PHP 4 because this isn't returning by reference?
    return foo();
}
Thanks,

--Dan

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