Function with reference-passed variabel

[The87Boy]

Are there somebody, who can tell me, what I'm doing wrong with this
function:
function hej($q, &$h) {
if ($q == 0) {
return true;
$h = 'Hello';
} else {
return false;
$h = 'Goodbye';
}
}

$rt = hej(0, &$a);
if ($rt==true) { echo 'Hej'; }
else { echo 'Farvel'; }
print_r($a);
echo "<br />\n";

[Oli Filth]

Re: Function with reference-passed variabel

The87Boy said the following on 26/09/2006 12:04:

Are there somebody, who can tell me, what I'm doing wrong with this
function:
function hej($q, &$h) {
if ($q == 0) {
return true;
$h = 'Hello';
} else {
return false;
$h = 'Goodbye';
}
}
>
$rt = hej(0, &$a);
if ($rt==true) { echo 'Hej'; }
else { echo 'Farvel'; }
print_r($a);
echo "<br />\n";
>

You are returning from the function before $h is set.

--
Oli

[The87Boy]

Re: Function with reference-passed variabel

Yes, but does that mean, you can't write a function like system()
youself?

Oli Filth wrote:

You are returning from the function before $h is set.

[Oli Filth]

Re: Function with reference-passed variabel

The87Boy said the following on 26/09/2006 12:50:

Oli Filth wrote:

>You are returning from the function before $h is set.

>
Yes, but does that mean, you can't write a function like system()
youself?

Just make sure you set $h *before* the return statement.

--
Oli

[Johnny]

Re: Function with reference-passed variabel


"Oli Filth" <catch@olifilth .co.ukwrote in message
news:PV7Sg.4714 5$7D6.28026@new sfe2-win.ntli.net...

The87Boy said the following on 26/09/2006 12:04:

Are there somebody, who can tell me, what I'm doing wrong with this
function:
function hej($q, &$h) {
if ($q == 0) {
return true;
$h = 'Hello';
} else {
return false;
$h = 'Goodbye';
}
}

$rt = hej(0, &$a);
if ($rt==true) { echo 'Hej'; }
else { echo 'Farvel'; }
print_r($a);
echo "<br />\n";

>
You are returning from the function before $h is set.
>
--
Oli

also you don't need to use the & when you call the function, only when you
define it:

http://us2.php.net/manual/en/language.references.pass.php