"John A. Grant" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
[...]
> How do I distinguish between false and "$xxx parameter not
> passed"? Do I use isset()? Do I use ===?
Well, I guess I should have done some homework first. This
code seems to work fine:
function somefunction($text,$xxx=null)
{
if(isset($xxx)){
echo $xxx ? "true" : "false";
}else{
echo "null";
}
echo "\n";
}
somefunction("hello");
somefunction("hello",true);
somefunction("hello",false);
It prints:
null
true
false
which is what I want.
--
John A. Grant * I speak only for myself * (remove 'z' to reply)
Radiation Geophysics, Geological Survey of Canada, Ottawa
If you followup, please do NOT e-mail me a copy: I will read it here
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