visual confirmation system

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Visual Confirmation System

Submitted by GHS, Mar 2007.
This tutorial will explains how to put a visual confirmation in your register form.



In somewhere on page of form, add:
Code:
  2. /* generating the random number */
     
  3. $rand = rand(11111,99999);
     

  4.  
  5. /* generating the image */
     
  6. if (isset($_GET[‘mode’] && $_GET[‘mode’] == ‘image’)
     
  7. {
     
  8.  session_start();
     
  9.  $_SESSION[‘code’] = md5($rand);
     
  10.  $img = imagecreate(50, 20);
     
  11.  $bkg = imagecolorallocate($img, 0, 0, 0);
     
  12.  $color = imagecolorallocate($img, 255, 255, 255);
     
  13.  imagestring($img, 5, 2, 2, $rand, $color);
     
  14.  header(‘Content-type:image/gif’);
     
  15.  imagegif($img);
     
  16.  imagedestroy($img);
     
  17.  exit;
     
  18. }
     

  19.  
  20. ?>
     

  21.  
  22.  
    Visual Confirmation

     

  23.  

     

  24.  

     

  25.  

     

  26.  

Now in other file (specified on

before the fields of form) add:

Code:
  2. session_start();
     

  3.  
  4. $field = isset($_POST[‘visualconfirm’]) ? $_POST[‘visualconfirm’] : ”;
     

  5.  
  6. if (md5($field) == $_SESSION[‘code’])
     
  7. {
     
  8.  // action doed if confirmation code filled on field is correct
     
  9. }
     
  10. else
     
  11. {
     
  12.  // action doed if confirmation code filled on field is incorrect
     
  13. }
     

  14.  
  15. ?> 
P.S.: Don’t forgot that you must put the submit button in your form.

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