Thread: How to change Captcha Image?

Hi Smoge,

How can i change Captcha Image. as my site is swedish i want to add some swedish letters to my capatcha images that will cut down all fake and nigeraians signups as they dont have swedish letters on her keyboards.

anyideas how to do this?

version dolphin 5.6

Edit the array in simg/simg.php

Smoge

thx smoge,

I find it and as you know my coding is non. i added my swedish characters and tested join form, i could see my characters but not all the time.

is it possible to have one of the 3 characters being addade all the time?

I am sure - but need to code for that.

Smoge

Hi Smoge,

i just added my characters like this

[CODE]$chars = array("a","b","c","d","e","f","h","i","k","m","n", "o","r","s","t","u","v","w","x","z","å","ä","ö","2","3","4","5","6","7","8","9");/CODE]

i can see the characters in join form but is not working to send form.

is it something easy tochange in code or should i just leave it?

My god, you really are not a coder... ha ha

Just take out the numbers and letters you dont want....

You can just have 5 or 6 foreign characters in there if you want.

Up to you.

Thx Smoge,
again for your help

yes i cant code that part of my brain is missing

i removed "w","x","z" and added "å","ä","ö" still not working i see the letters when i add them is not working to send the form the box gets red.


[CODE]$chars = array("a","b","c","d","e","f","h","i","k","m","n", "o","r","s","t","u","v","å","ä","ö","2","3","4","5","6","7","8","9");/CODE]


this is my code in simg.php what am i doing wrong?

Code:

<?php

/***************************************************************************
*                            Dolphin Smart Community Builder
*                              -----------------
*     begin                : Mon Mar 23 2006
*     copyright            : (C) 2006 BoonEx Group
*     website              : http://www.boonex.com/
* This file is part of Dolphin - Smart Community Builder
*
* Dolphin is free software. This work is licensed under a Creative Commons Attribution 3.0 License. 
* http://creativecommons.org/licenses/by/3.0/
*
* Dolphin is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the Creative Commons Attribution 3.0 License for more details. 
* You should have received a copy of the Creative Commons Attribution 3.0 License along with Dolphin, 
* see license.txt file; if not, write to marketing@boonex.com
***************************************************************************/


require_once( '../inc/header.inc.php' );
require_once( BX_DIRECTORY_PATH_INC . 'images.inc.php' );

ob_start();
$chars = array("a","b","c","d","e","f","h","i","k","m","n","o","r","s","t","u","v","å","ä","ö","2","3","4","5","6","7","8","9");
/*
$chars = array("a","A","b","B","c","C","d","D","e","E","f","F","g","G","h","H","i","I","j","J",
			   "k","K","L","m","M","n","N","o","p","P","q","Q","r","R","s","S","t","T",
			   "u","U","v","V","w","W","x","X","y","Y","z","Z","2","3","4","5","6","7","8","9");
*/
$textstr = '';
for ($i = 0, $length = 6; $i < $length; $i++)
   $textstr .= $chars[rand(0, count($chars) - 1)];

$hashtext = md5($textstr);
setcookie('strSec', $hashtext, 0, '/');

if ( produceSecurityImage( $textstr, $hashtext ) != IMAGE_ERROR_SUCCESS )
{
	// output header
	header( "Content-Type: image/gif" );
	
    header( "Expires: Mon, 26 Jul 1997 05:00:00 GMT" );
    header( "Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT" );
    header( "Cache-Control: no-store, no-cache, must-revalidate" );
    header( "Cache-Control: post-check=0, pre-check=0", false );
    header( "Pragma: no-cache" );
	
	// output error image
	@readfile( $dir['profileImage'] . 'simg_error.gif' );
}

ob_end_flush();
?>

Not sure if the code supports non latin characters... this maybe the heart of the problem.

I think you need to troubleshoot it further.. and maybe add some debug output.

Warm regards,
Smoge