Regex help

[Tristan_Wells]

My email checking function isn't quite working. Its saying the email Ive used for months isn't valid 😛

   function check_email($adress)
    {
      if(preg_match('^([a-zA-Z0-9_])+(@[a-zA-Z-])+(.[a-z])^', $adress))
       {
         return true;
       } else {
         return false;
       }
    }

Any help is appreceated.

[pyro]

Here's why:

The last set of parenthesis contains this: .[a-z] That means a period, followed by one lowercase letter a-z. Basically, it will check like this:

one or more a-z, A-Z, 0-9 or _
followed by one or more @,a-z,A-Z or - (including more than one @)
followed by a period and then one a-z.

Not sure what the ^ is doing at the end - bet you meant $.

Also, since it is not a regex based on the RFC, and will disallow a fair number of email addresses, you might want to look into using something different.