[Resolved] How to check that a string does NOT contain some character

[Davidc316]

Hi.

I'm working on a form that (amongst other things) takes in email addresses then checks to see if they are valid. The way I want to check them is just to assume that if they do not contain "@" then I'm gonna declare the email address as being invalid and the program will come to an end.

Anyway, I have a bit of code that checks to see if a "@" is available. It works fine. But, does anyone know how to turn this little bit of code around so that it says 'If string does NOT contain @ then print "You never gave a proper email address"'?????

Here's my little snippit of code-

} elseif (strstr($email, "@")) {
print "You never gave a proper email address";

PS- At first I thought adding a '!' before the @ would have done the job, but that doesn't work. So, the little bit of code above does the opposite of what I want!

[ahundiak]

Almost. Stick the ! in front of the strstr.

if (!strstr($email,"@"))

And if search a bit you will find some nice regular expressions that will do a better job for you. They look awful but they work.

[Davidc316]

Thank you my friend. You nailed it in one!!!

I've been pulling my hair out for hours with that one!

I'll think of a better thing to say if the email address doesn't have a @. It's early stages and I'm just trying to get the basic thing up and running first.

Thanks again. I owe you one!

Thread resolved.