I just downloaded a script, and part of that script is this file:
PHP Code:
<?php
/*
Nice script from http://www.finalwebsites.com/snippets.php?id=39
example of usage:
inside your form
<input type="text" name="validator" id="validator" size="4" />
<img src="captcha.php" alt="CAPTCHA image" width="60" height="20" vspace="1" align="top" />
and test the value of the "validator" form field like:
if (!empty($_POST['validator']) && $_POST['validator'] == $_SESSION['rand_code']) {
process your form here
at least destroy the session
unset($_SESSION['rand_code']);
*/
session_start();
session_regenerate_id(true); // Generate new session id and delete old (PHP >= 5 only)
// Captcha string
if (!isset($_SESSION['rand_code'])) {
$str = "";
$length = 0;
for ($i = 0; $i < 4; $i++) {
// this numbers refer to numbers of the ascii table (small-caps)
$str .= chr(rand(97, 122));
}
$_SESSION['rand_code'] = $str;
}
// generate captcha image
$imgX = 60;
$imgY = 20;
$image = imagecreatetruecolor(60, 20);
$backgr_col = imagecolorallocate($image, 238,239,239);
$border_col = imagecolorallocate($image, 125,125,125);
$text_col = imagecolorallocate($image, 125,125,125);
imagefilledrectangle($image, 0, 0, 60, 20, $backgr_col);
imagerectangle($image, 0, 0, 59, 19, $border_col);
$font = "includes/elephant.ttf"; // font
$font_size = rand(12, 15);
$angle = rand(-5, 5);
//Line 46 VVV
$box = imagettfbbox($font_size, $angle, $font, $_SESSION['rand_code']);
//Line 46 ^^^
$x = (int)($imgX - $box[4]) / 2;
$y = (int)($imgY - $box[5]) / 2;
imagettftext($image, $font_size, $angle, $x, $y, $text_col, $font, $_SESSION['rand_code']);
header("Content-type: image/png");
imagepng($image);
imagedestroy ($image);
?>
When that is run, I get
Quote:
|
Originally Posted by error
Fatal error: Call to undefined function: imagettfbbox() in /home/dotbooks/public_html/auth/captcha.php on line 46
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PHP version 4.4.3
GD info:
Quote:
gd
GD Support enabled
GD Version bundled (2.0.28 compatible)
GIF Read Support enabled
GIF Create Support enabled
JPG Support enabled
PNG Support enabled
WBMP Support enabled
XBM Support enabled
|
What's going wrong?
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