Thank you for subscribing to the HM2K.org newsletter.
'; function checkemail($email) { if(preg_match("/^(([A-Za-z0-9]+_+)|([A-Za-z0-9]+\-+)|([A-Za-z0-9]+\.+)|([A-Za-z0-9]+\++))*[A-Za-z0-9]+@((\w+\-+)|(\w+\.))*\w{1,63}\.[a-zA-Z]{2,6}$/" , $email)){ list($username,$domain)=split('@',$email); if(!getmxrr ($domain,$mxhosts)){ return false; } return true; } return false; } if ($_POST) { if (isset($_POST['email'])) { $email=$_POST['email']; } if (isset($_POST['action'])) { $check=$_POST['action']; } $emaillist=file($logfile); $log="$email\n"; $subject="$subject\n"; if (!file_exists($logfile)) { echo 'Error: Could not find email database, please contact the webmaster
'; return; } if (!is_writable($logfile)) { echo 'Error: email database is not writable, please contact the webmaster
'; return; } if ($check == "subscribe") { if (!checkemail($email)) { echo 'Error: You did not enter a valid email address, go back and try again
'; return; } if (in_array("$email\n", $emaillist)) { echo 'Your email address is already in our database. Go back
'; } else { $fp=fopen($logfile,"a+"); fputs($fp, $log); fclose($fp); if ($sendemail != "") { $headers = "X-Mailer: $REMOTE_ADDR - $HTTP_USER_AGENT\n"; $headers .= "From: $emailfrom\r\n"; $headers .= "Content-type: text/html;\r\n"; $message = "$emailbody\n"; $message .= "\n"; if (mail($email, $subject, $message, $headers)) { echo 'Thank you for subscribing to our newsletter, an email has been sent.
'; return; } else { echo 'Error: mail could not be sent, go back and try again
'; return; } } else { echo 'Thank you for subscribing to our newsletter. Go back
'; } } } if ($check == "unsubscribe") { if (in_array("$email\n", $emaillist)) { $emaillist=array_diff($emaillist, array("$email\n")); $fp=fopen($logfile,"w"); foreach ($emaillist as $line) { fputs($fp, $line); } fclose($fp); echo "You have successfully unsubscribed from our newsletter. Go back
"; return; } else { echo 'Your email address is not in our database. Go back
'; } } } else { echo ''; } ?>