Block certain data from being submitted

[sphinx]

Hello,

 

Basically, What I'm looking for would be for a method of blocking certain email addresses from being submitted in a form, I need it to block certain emails that are on the list.

 

I think the best way to describe it would be a form submission blacklist that is checked before it gets submitted.

 

Many thanks

[Pikachu2000]

Store the blacklisted addresses in an array in a config file, or even in a database table. Array method:

 

$blacklisted = array( lower-case blocked addresses here );

$address = 'BaDaDdReSs@pr0n_site.xxx';

if( in_array( strtolower($address), $blacklist ) {
     // block
} else {
     / allow
}

[sphinx]

Cheers Pik,

 

I can see where you're coming from, but can you explain:

 

$blacklisted = array( lower-case blocked addresses here );

 

That, because I thought that '$address = 'BaDaDdReSs@pr0n_site.xxx';' was the area in which you inputted blocked addresses. I simply could include this in the process.php area aka:

 

<?php

  if (isset($_REQUEST['email']))
  {
$email = $_REQUEST['email'] ;
$subject = $_REQUEST['subject'] ;
$from = $_REQUEST['from'] ;
$amount = $_REQUEST['amount'] ;
$message = $_REQUEST['message'] ;
$from2 = 'LOG@site.com';
$from = $from;

    mail("email@email.com ", "$subject",
    $message, "From:" . $from);

    }
  $headers = "From:" . $from;
  header('Location: success.php');
  ?>

 

I literally, just want an area where I can include multiple blocked address in the 'email' field.

 

Thanks alot.

 

 

 

[Pikachu2000]

in_array() performs a case-sensitive check to see if the value of the first parameter exists in the array specified as the second parameter. If it does, it returns TRUE, else FALSE. So, you create an array of lower case email addresses to use as the blacklist in $blacklisted, then check the strtolower()ed value of $address against it. If it's in the array it's blacklisted, otherwise it's fine.