/* Used to check if an email is valid (or acceptable for my purposes */
The goal of this code is to ensure $email is structured as follows:
1) MAILBOX NAME (min 3 characters)
(alphanumeric|alphanumeric, underscore, period or hyphen|alphanumeric)
2) @ Symbol
3) DOMAIN (min 3 characters)
(alphanumeric|alphanumeric or hyphen|alphanumeric)
4) EXTENSION (.com|.net|.org)
if ( preg_match("/^[a-zA-Z0-9]+[a-zA-Z0-9_.-]+[a-zA-Z0-9]+@+[a-zA-Z0-9]+[a-zA-Z0-9-]+[a-zA-Z0-9]+\.(com|net|org)$/", $email ) > 0 ) {
echo "Good";
} else {
echo "Bad";
}