Customizing form requirment

[dmj120]

I was reading through some of the threads and found one (Where to begin? Client login for my wife's wedding consulting business)that directed me to http://www.phpfreaks.com/tutorials/40/0.php

My question is: can a variable be added, for the email input, to where only certain email addresses can be utilized. i.e. only @domain.com addresses will be accepted -- so if someone enters user@notcorrect.com the registration will fail, but user@domain.com will be accpeted and the registration will continue?

<form name="form1" method="post" action="register.php">
  <table width="100%" border="0" cellpadding="4" cellspacing="0">
    <tr> 
      <td width="24%" align="left" valign="top">First Name</td>
      <td width="76%"><input name="first_name" type="text" id="first_name2" value="<? echo $first_name; ?>"></td>
    </tr>
    <tr> 
      <td align="left" valign="top">Last Name</td>
      <td><input name="last_name" type="text" id="last_name" value="<? echo $last_name; ?>"></td>
    </tr>
    <tr> 
      <td align="left" valign="top">Email Address</td>
      <td><input name="email_address" type="text" id="email_address" value="<? echo $email_address; ?>"></td>
    </tr>
    <tr> 
      <td align="left" valign="top">Desired Username</td>
      <td><input name="username" type="text" id="username" value="<? echo $username; ?>"></td>
    </tr>
    <tr> 
      <td align="left" valign="top">&nbsp;</td>
      <td><input type="submit" name="Submit" value="Join Now!"></td>
    </tr>
  </table>
</form>

Thanks for your help,
Josh

[yjanse]

You could split it in to fields and use a dropdown box for the domain part of the email address:

<tr>
  <td>
    <input name="email_uname" type="text" id="email_uname" value="usernamehere"> @
    <select>
      <option value="domain.com">domain.com</option>
      <option value="domain2.com">domain2.com</option>
      <option value="domain3.com">domain3.com</option>
    </select>
  </td>
</tr>

Store the allowed domain in a textfile or database, and fill the choice box with them. If you don't want to split the address in a part before the '@' and after it, consider a regular expression in the PHP code which checks if the entered address ends with a valid domain.

[dmj120]

consider a regular expression in the PHP code which checks if the entered address ends with a valid domain.

Is what I would like to do ... I'm going to see if I can figure it out. Its the "ends with" that I'm not sure about.

Thank you

[yjanse]

For example, you can explode it on the '@' character, and take the last part (not foolproof though).

<?php
// Small example (not tested, just from my head)
$email = 'dmj@somewhere.com';
list($username, $domain) = explode('@', $email);
echo 'Username: ' . $username . '<br/>'; 
echo 'Domain: ' . $domain . '<br/>';
$valid = array('domain1.com', 'domain2.com', 'bananas.com');
if(array_key_exists($domain, $valid)) {
  echo "Don't register $username@$domain !!";
} else {
  echo "Go ahead and register him!";
}
/** OUTPUT
Username: dmj
Domain: somewhere.com
Don't register [email]dmj@somewhere.com[/email] !!
*/
?>

[dmj120]

thank you, that gives me a good direction.

Thanks again
Josh

[yjanse]

No problem, good luck Josh!
You might also like the string functions reference: http://nl.php.net/manual/en/ref.strings.php