Someone

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