[Resolved] re-display form after server side php script

[rmitchell]

Hello everyone! I have searched through the boards but have not found an answer to my problem and thus am submitting my first thread.

I have created a form where the user fills in an email address. I want to create a server side php script to validate both the format of the email address but also the domain using the php function checkdnsrr.

If the email address is formatted incorrectly or the mail domain does not exist, I want to redisplay the form with the users information displayed along with an error message (ie: 'Email address incorrectly formatted' or 'Sorry... mail domain does not exist').

Any suggestions as to how to accomplish this?

Regards,
Bob Mitchell

[devinemke]

from the User Contributed Notes at:
http://www.php.net/manual/en/function.checkdnsrr.php

function validate_email($email){

   $exp = "^[a-z\'0-9]+([._-][a-z\'0-9]+)*@([a-z0-9]+([._-][a-z0-9]+))+$";

   if(eregi($exp,$email)){

 if(checkdnsrr(array_pop(explode("@",$email)),"MX")){
   return true;
 }else{
   return false;
 }

   }else{

 return false;

   }    

}

[Roger_Ramjet]

if (isset($_POST['submit'])) {

$email = $_POST['email'];

if (funcEmailCheck($email)) {

// send mail

echo 'Thank you. Your data has been whatevered and you will receive whatever in an email';

}
else {

echo 'Sorry, ' . $email . 'is not a valid email address. Please re-enter it.':

// code to redisplay form with user input and a text for new email

}
}
else {

// code to display input form

}

[rmitchell]

Thanks for the help, guys!

Regards,
Bob Mitchell 🙂