newbie questions about intval()

[jimdy]

How do I identify between

intval("0")

and

intval("a") //in this case it should be a error I need to catch

they both return 0?

[nnichols]

You could test for "0" separately -

if ($var != 0) {
if (!intval($var)) {
$var = 'error';
}
}

It's a bit crude but it would set $var to 'error' if $var was not an integer, otherwise $var is left unchanged.

Hoe this helps 😉

P.S. There must be a better way, but this will work.

[Tekron-X]

you might want to try using an ereg that says you only can use a numerical value to the function argumen. then set up and if for it that gives some sort of error to whoever but in the invalad value.