Thread: Security Image - Quick Fix

Thank you for this fix, but it's still not working for me

in an earlier version of aedating (4.0) it happened to me (catchas not showing). i solved uploading another font and changed reference in images.inc.php (search for "verdana.ttf").
hope it helps.

I had the same problem of GD not working, and all I did was add ttf support to php, their implementation of GD requires it.


when configuring PHP do:

--with-gd
--with-ttf
--enable-gd-native-ttf




ps the freetype2 library must be installed for this!

PHP Code:

ob_start();
session_start();

$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);
$_SESSION['strSec'] = $hashtext;

# custom image
header("Content-type: image/jpeg");
$im = @imagecreatetruecolor(70, 30)
   or die("Cannot Initialize new GD image stream");

# custom image
$background_color = imagecolorallocate($im, 0, 0, 0);
$text_color = imagecolorallocate($im, 255, 255, 204);
imagestring($im, 25, 7, 7, $textstr, $text_color);
imagejpeg($im);


ob_end_flush(); 


You can tweak it as needed to include a custom background and many other aspects and elements.

Can anyone see any issues with this?

// write text on image
$workFilename = "{$dir['root']}tmp/{$hash}.png";
$color = '#' . sprintf( '%02x', $fontColorR ) . sprintf( '%02x', $fontColorG ) . sprintf( '%02x', $fontColorB );
//$textX += $backgroundOffsetX;
//$textY += $backgroundOffsetY;
$textX += 1;
$textY += 1;

I tried the above fixes. I did get the image to show, but not the numbers or letters. What should I do next?