Default parameter

If possible, how do I use a function to create a default parameter
value? The following gives me an "unexpected '(', expecting ')'"
error, which makes sense.

function DisplayInfo($ID, $startdate=date("Ydm"), $numdays=7) {
...function here...
}

.oO(Mike)

>If possible, how do I use a function to create a default parameter
>value? The following gives me an "unexpected '(', expecting ')'"
>error, which makes sense.
>
>function DisplayInfo($ID, $startdate=date("Ydm"), $numdays=7) {
> ...function here...
>}

Default arguments have to be constant values, no variables or function
calls. You could use something like this:

function DisplayInfo($ID, $startdate = NULL, $numdays = 7) {
if (is_null($startdate)) {
$startdate = date('Ydm');
}
...
}

Micha

Mike wrote:
> If possible, how do I use a function to create a default parameter
> value?
>
> The following gives me an "unexpected '(', expecting ')'"
> error, which makes sense.
>
> function DisplayInfo($ID, $startdate=date("Ydm"), $numdays=7) {
> ...function here...
> }


The default value has to be a constant. It cannot be a variable or a
class member or (as you noticed) a function call.


function DisplayInfo($ID, $startdate=NULL, $numdays=7) {
if (is_null($startdate)) $startdate = date('Ydm');
...function here...
}


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Thanks for clearing that up. I ended up using '$startdate="blurgh"'

if ($startdate="blurg"){
$startdate=date("Ymd");
}

Michael Fesser <netizen@gmx.net> wrote in message news:<9diip01h7eqforq6e8h0ucmr6sk7tl29jq@4ax.com>. ..
> .oO(Mike)
>
> >If possible, how do I use a function to create a default parameter
> >value? The following gives me an "unexpected '(', expecting ')'"
> >error, which makes sense.
> >
> >function DisplayInfo($ID, $startdate=date("Ydm"), $numdays=7) {
> > ...function here...
> >}
>
> Default arguments have to be constant values, no variables or function
> calls. You could use something like this:
>
> function DisplayInfo($ID, $startdate = NULL, $numdays = 7) {
> if (is_null($startdate)) {
> $startdate = date('Ydm');
> }
> ...
> }
>
> Micha