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<?php
include_once("config.inc.php");
$vword = new VeriWord(148,60);
$vword->output_image();
$vword->destroy_image();
#captchaClass.php file below
## v1 Stable ##
######
## Verification Word
######
## This class generate an image with random text
## to be used in form verification. It has visual
## elements design to confuse OCR software preventing
## the use of BOTS.
##
#######
## Author: Huda M Elmatsani
## Email: justhuda at netrada.co.id
##
## 25/07/2004
#######
## Copyright (c) 2004 Huda M Elmatsani All rights reserved.
## This program is free for any purpose use.
########
##
## USAGE
## create some image with noise texture, put in image directory,
## rename to noise_#, see examples
## put some true type font into font directory,
## rename to font_#, see exmplae
## you can search and put free font you like
##
## see sample.php for test and usage
## sample URL: http://www.program-ruti.org/veriword/
####
class VeriWord {
/* path to font directory*/
var $dir_font = "fonts/";
/* path to background image directory*/
var $dir_noise = "noises/";
var $word = "";
var $im_width = 0;
var $im_height = 0;
function VeriWord($w=200, $h=80) {
/* create session to set word for verification */
startCMSSession();
$this->set_veriword();
$this->im_width = $w;
$this->im_height = $h;
}
function set_veriword() {
/* create session variable for verification,
you may change the session variable name */
$this->word = $this->pick_word();
$_SESSION['veriword'] = $this->word;
}
function output_image() {
/* output the image as jpeg */
$this->draw_image();
header("Content-type: image/jpeg");
imagejpeg($this->im);
}
function pick_word() {
global $database_server, $database_user, $database_password, $dbase, $table_prefix, $database_connection_charset;
// set default words
$words="MODx,Access,Better,BitCode,Chunk,Cache,Desc,Design,Excell,Enjoy,URLs,TechView,Gerald,Griff,Humphrey,Holiday,Intel,Integration,Joystick,Join(),Oscope,Genetic,Light,Likeness,Marit,Maaike,Niche,Netherlands,Ordinance,Oscillo,Parser,Phusion,Query,Question,Regalia,Righteous,Snippet,Sentinel,Template,Thespian,Unity,Enterprise,Verily,Veri,Website,WideWeb,Yap,Yellow,Zebra,Zygote";
// connect to the database
if(@$dbConn = mysql_connect($database_server, $database_user, $database_password)) {
mysql_select_db($dbase);
@mysql_query("SET CHARACTER SET {$database_connection_charset}");
$sql = "SELECT * FROM $dbase.`".$table_prefix."system_settings` WHERE setting_name='captcha_words'";
$rs = mysql_query($sql);
$limit = mysql_num_rows($rs);
if($limit==1) {
$row = mysql_fetch_assoc($rs);
$words = $row['setting_value'];
}
}
$arr_words = explode(",", $words);
/* pick one randomly for text verification */
return (string) $arr_words[array_rand($arr_words)].rand(10,999);
}
function draw_text() {
// dynamically load GD2 lib
if (!extension_loaded('gd')) {
if (strtoupper(substr(PHP_OS, 0,3) == 'WIN')) {
@dl('php_gd2.dll');
}
else {
@dl('gd2.so');
}
}
/* pick one font type randomly from font directory */
//$text_font = $this->dir_font."".rand(1,3).".ttf";
// added by Alex - read ttf dir
$dir = dir("./ttf");
$fontstmp = array();
while (false !== ($file = $dir->read())) {
if($file!="." && $file!=".." && file_exists('./ttf/'.$file) && !is_dir('./ttf/' . $file)) {
$fontstmp[] = './ttf/'.$file;
}
}
$dir->close();
$text_font = (string) $fontstmp[array_rand($fontstmp)];
/* angle for text inclination */
$text_angle = rand(-9,9);
/* initial text size */
$text_size = 30;
/* calculate text width and height */
$box = imagettfbbox ( $text_size, $text_angle, $text_font, $this->word);
$text_width = $box[2]-$box[0]; //text width
$text_height= $box[5]-$box[3]; //text height
/* adjust text size */
$text_size = round((20 * $this->im_width)/$text_width);
/* recalculate text width and height */
$box = imagettfbbox ( $text_size, $text_angle, $text_font, $this->word);
$text_width = $box[2]-$box[0]; //text width
$text_height= $box[5]-$box[3]; //text height
/* calculate center position of text */
$text_x = ($this->im_width - $text_width)/2;
$text_y = ($this->im_height - $text_height)/2;
/* create canvas for text drawing */
$im_text = imagecreate ($this->im_width, $this->im_height);
$bg_color = imagecolorallocate ($im_text, 255, 255, 255);
/* pick color for text */
$text_color = imagecolorallocate ($im_text, 0, 51, 153);
/* draw text into canvas */
imagettftext ( $im_text,
$text_size,
$text_angle,
$text_x,
$text_y,
$text_color,
$text_font,
$this->word);
/* remove background color */
imagecolortransparent($im_text, $bg_color);
return $im_text;
imagedestroy($im_text);
}
function draw_image() {
/* pick one background image randomly from image directory */
$img_file = $this->dir_noise."noise".rand(1,4).".jpg";
/* create "noise" background image from your image stock*/
$noise_img = @imagecreatefromjpeg ($img_file);
$noise_width = imagesx($noise_img);
$noise_height = imagesy($noise_img);
/* resize the background image to fit the size of image output */
$this->im = imagecreatetruecolor($this->im_width,$this->im_height);
imagecopyresampled ($this->im,
$noise_img,
0, 0, 0, 0,
$this->im_width,
$this->im_height,
$noise_width,
$noise_height);
/* put text image into background image */
imagecopymerge ( $this->im,
$this->draw_text(),
0, 0, 0, 0,
$this->im_width,
$this->im_height,
70 );
return $this->im;
}
function destroy_image() {
imagedestroy($this->im);
}
}
?>