banning/redirect after submission!

[patentu]

i have an html page with 3 fields "name,email,message" this goes to done.php done.php process the data and saves "name,email,message,ip" to an .txt file on the server,(IIS6 server 2003)how can i redirect to another page if that IP submitted already?Because i have some "friends" who refreshes the page and i get allot of empty fields hope you understand.

[brentman]

Can you put this on your page:

 

header( 'Location: http://www.yoursite.com/new_page.html' );

 

Just dont have any outputs to the browser before this or it won't work for sure...

[patentu]

i have that in the php and works,i want a script that will check if that ip already submited that form,if yes redirect to other url without saving anything on the server.

[Muddy_Funster]

risky thing to play with in this climate of dynamicly assigned IP addresses and the such.  are you focusing purely on IPv4 or are you accomidating the IPv6 market as well?

[patentu]

<?

$visitor = $_SERVER['REMOTE_ADDR'];

if (preg_match("/192.168.0.1/",$visitor)) {

      header('Location: http://www.yoursite.com/thank-you.html');

} else {

      header('Location: http://www.yoursite.com/home-page.html');

};

?>

 

something like this,but i want it to take the ip from a list

[sphinx]

Why don't you just add captcha? Or add field checkers.

[sphinx]

// for your case, example 2 "field2" would be an email field.
//"field4" would be captcha.
if(isset($_POST['submit']))
{

$field1 = $_POST['field1'];
$field2 = $_POST['field2'];
        $field3 = $_POST['field3'];	
if(empty($field1)|| empty($field2)|| empty($field3))
{
	$errors .= "\n Some of the above fields have not been filled in.";	
}
        //Injection not nessessary but recommended to avoid idiots.
if(IsInjected($field2))
{
	$errors .= "\n That email is not valid.";
}
if(empty($_SESSION['field4'] ) ||
strcasecmp($_SESSION['field4'], $_POST['field4']) != 0)
{
	$errors .= "\n Those three characters entered are incorrect. Please try again, alternatively click <a href='javascript:refreshCaptcha();'>here</a> to refresh the characters.";
}
        //start of injection
        function IsInjected($str)
       {
  $injections = array('(\n+)',
              '(\r+)',
              '(\t+)',
              '(%0A+)',
              '(%0D+)',
              '(%08+)',
              '(%09+)'
              );
  $inject = join('|', $injections);
  $inject = "/$inject/i";
  if(preg_match($inject,$str))
    {
    return true;
  }
  else
    {
    return false;
  }
}

 

Remove the captcha part if you don't want it incorporated.