login captcha?

[iRock]

hello guys, does anyone knows or have a login captcha for GRPG? ?(

the fields in the login page will be:

username:

password:

security code:(this code be a random 5 numbers)

thanks in advance.

[Jordan Palmer]

Google Is you're friend.

 

 

There isn't a captcha just for grpg, make it compatible ;)

[Danny696]

Go for reCapatcha

[Djkanna]

Go for reCapatcha

No don't! That's user friendly at it's worst.

[SMOKEY_TEK]

This is what I use..

Save file as CaptchaSecurityImages.php Also, you will need monofont.tff to work...

<?php
session_start();
class CaptchaSecurityImages {
  var $font = 'monofont.ttf';
  function generateCode($characters) {
     /* list all possible characters, similar looking characters and vowels have been removed */
     $possible = '23456789bcdfghjkmnpqrstvwxyz';
     $code = '';
     $i = 0;
     while ($i < $characters) { 
        $code .= substr($possible, mt_rand(0, strlen($possible)-1), 1);
        $i++;
     }
     return $code;
  }
  function CaptchaSecurityImages($width='120',$height='40',$characters='6') {
     $code = $this->generateCode($characters);
     /* font size will be 75% of the image height */
     $font_size = $height * 0.75;
     $image = imagecreate($width, $height) or die('Cannot initialize new GD image stream');
     /* set the colours */
     $background_color = imagecolorallocate($image, 255, 255, 255);
     $text_color = imagecolorallocate($image, 20, 40, 100);
     $noise_color = imagecolorallocate($image, 100, 120, 180);
     /* generate random dots in background */
     for( $i=0; $i<($width*$height)/3; $i++ ) {
        imagefilledellipse($image, mt_rand(0,$width), mt_rand(0,$height), 1, 1, $noise_color);
     }
     /* generate random lines in background */
     for( $i=0; $i<($width*$height)/150; $i++ ) {
        imageline($image, mt_rand(0,$width), mt_rand(0,$height), mt_rand(0,$width), mt_rand(0,$height), $noise_color);
     }
     /* create textbox and add text */
     $textbox = imagettfbbox($font_size, 0, $this->font, $code) or die('Error in imagettfbbox function');
     $x = ($width - $textbox[4])/2;
     $y = ($height - $textbox[5])/2;
     imagettftext($image, $font_size, 0, $x, $y, $text_color, $this->font , $code) or die('Error in imagettftext function');
     /* output captcha image to browser */
     header('Content-Type: image/jpeg');
     imagejpeg($image);
     imagedestroy($image);
     $_SESSION['security_code'] = $code;
  }
}
$width = isset($_GET['width']) && $_GET['width'] < 600 ? $_GET['width'] : '120';
$height = isset($_GET['height']) && $_GET['height'] < 200 ? $_GET['height'] : '40';
$characters = isset($_GET['characters']) && $_GET['characters'] > 2 ? $_GET['characters'] : '6';
$captcha = new CaptchaSecurityImages($width,$height,$characters);
?>

 

Where you want to use or see the Captcha insert this:

 

<img src='CaptchaSecurityImages.php' width='120' height='40'>

 

After this part:

$checkuser = mysql_query("SELECT * FROM `users` WHERE `login_name` OR `username` ='$registerLoginName'");
	$username_exist = mysql_num_rows($checkuser);
	if($username_exist > 0) { 
		$message .= "The Login Name you entered is already in use. <br>";
	}

Include code below:

if(!$_POST['registerCaptcha']) {
   $message .= "You must enter the Verification Code correctly. <br>";
}

 

I apologize for my bad instructions... Hope you can figure them out..