Stuck on small problem

[Anon]

I am trying to validate a zip code from a form using the following code.

if (!is_int($zipcode) || $zipcode == ""){
$error[] = "Zip Code"; //error array
}

I don't know why this won't work?

[knickerlas]

Whats the problem?
If it just doesn't do as it should then try wrapping the expressions in braskets like this:

if ((!is_int($zipcode)) || ($zipcode == "")){
$error[] = "Zip Code"; //error array
}

That may work. Try it.

Nick

[Anon]

I don't know why this won't work?

Three reasons:
1) Datatypes:
$zip1 = "19107";
$zip2 = 19107;
is_int($zip1) <> is_int($zip2)
2) Zip+4 US zipcodes aren't integers(example: "19104-2307")
3) International zipcodes/postal codes aren't integers. Example:
322 Regents Park Road
Finchley
London
N3 2QQ <-- postal code
United Kingdom

-- Michael
Darkstreak Computing & Innovations
www.darkstreak.com

[knickerlas]

Doh!

🙂