if(!eregi("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.(aero|asia|biz|cat|com|coop|cym|edu|geo|gov|info|int|jobs|mil|mobi|museum|name|net|org|post|pro|tel|travel|(?:ab|bc|mb|nb|nf|nl|ns|nt|nu|on|pe|qc|sk|yk)\.ca|(?:ak|al|ar|az|ca|co|ct|dc|de|fl|ga|hi|ia|id|il|in|ks|ky|la|ma|md|me|mi|mn|mo|ms|mt|nc|nd|ne|nh|nj|nm|nv|ny|oh|or|pa|ri|sc|sd|tn|tx|ut|va|vt|wa|wi|wv|wy|fed|nsn)\.us|(?:ac|co|gov|ltd|me|mod|net|nhs|org|plc|sch)\.uk|[a-z]{2}))$", $email)) $errors[] = "A \"Valid e-Mail Address\" is required";