';} $string_exp = "/^[A-Za-z .'-]+$/"; if(!preg_match($string_exp,$first_name)) { $error_message .= 'The First Name you entered does not appear to be valid.
';} if(!preg_match($string_exp,$last_name)) { $error_message .= 'The Last Name you entered does not appear to be valid.
';} if(strlen($comments) < 2) { $error_message .= 'The Comments you entered do not appear to be valid.
';} if(strlen($error_message) > 0) { exit($error_message); } else { echo 'valid'; }