[yasirlatif]

<?php
session_start(); //MUST START SESSION
$string_length=5; //NUMBER OF CHARS TO DISPLAY
$rand_string='';
for($i=0;$i<$string_length;$i++)
{
  //PICK A RANDOM UPPERCASE LETTER USING ASCII CODE
  $rand_string.=chr(rand(65,90));
}//IMAGE VARIABLES
$width=100;
$height=36;
//INIT IMAGE
$img=imagecreatetruecolor($width, $height);
//ALLOCATE COLORS
$black=imagecolorallocate($img, 255, 255, 255);
$gray=imagecolorallocate($img, 94, 127,194);
imagefilledrectangle($img, 0, 0, $width, $height, $gray);
//REPLACE THIS WITH THE FONT YOU UPLOAD
$font='BELLB.TTF';
$font_size=16;
//CALC APPROX LOCATION FOR TEXT
$y_value=($height/2)+($font_size/2);
$x_value=($width-($string_length*$font_size))/2;
//DRAW STRING USING TRUE TYPE FUNCTION
imagettftext($img, $font_size, 0, $x_value,
	$y_value, $black, $font, $rand_string);
$_SESSION['encoded_captcha']=md5($rand_string);
//OUTPUT IMAGE HEADER AND SEND TO BROWSER
header("Content-Type: image/png");
imagepng($img);
?>

Attached File(s)

•  captcha_script.php (990bytes)
  Number of downloads: 37

[Martyr2]

Does the host you are uploading it to have GD enabled? Secondly, make sure there is no space before the script. The first line will have to be your <?php. Third, make sure that BELLB.TTF is in the same directory as this script.

So check to make sure the host has that GD packaged installed (if you are getting some error about functions not recognized) and then make sure you have nothing printing before the script (even spaces) and that you have the font file in the same folder as the script.

This should fix the problems.

[ShaneK]

This exact same problem was solved previously.
I suggest taking a look at this thread and going through some of the steps.

Yours,
Shane~