- <?php
- //Session保存路径
- $sessSavePath = dirname(__FILE__)."/../data/sessions/";
- if(is_writeable($sessSavePath) && is_readable($sessSavePath)){ session_save_path($sessSavePath);}
- $letter = "";
- //获取随机数字
- for ($i=0; $i<3; $i++) {
- $letter .= chr(mt_rand(48,57));
- }
- //获取随机字母
- for ($i=0; $i<3; $i++) {
- $letter .= chr(mt_rand(65,90));
- }
- //重构字符顺序
- $strs = str_split($letter);
- shuffle ($strs);
- $rndstring = "";
- while (list (, $str) = each ($strs)) {
- $rndstring .= $str;
- }
- //获取随机字符
- //$letras = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
- //for($i=0; $i<6; $i++) {
- //$rndstring .= chr(mt_rand(48,90));
- // $rndstring .= $letras[rand(0, 35)];
- //}
- //如果支持GD，则绘图
- if(function_exists("imagecreate"))
- {
- //PutCookie("dd_ckstr",strtolower($rndstring),1800,"/");
- session_register('dd_ckstr');
- $_SESSION['dd_ckstr'] = strtolower($rndstring);
- $rndcodelen = strlen($rndstring);
- //图片大小
- //$im = imagecreate(85,20);
- $im = imagecreatefromgif("code.gif");
- //字体
- $font_type = dirname(__FILE__)."/data/ant1.ttf";
- //背景颜色
- //$backcolor = imagecolorallocate($im,190,190,120);
- //边框色
- //$iborder = ImageColorAllocate($im, 0x71,0x76,0x67);
- //字体色
- //不支持 imagettftext
- $fontColor = ImageColorAllocate($im, 0xff,0xff,0xff);
-
- //支持 imagettftext
- $fontColor2 = ImageColorAllocate($im, 0xff,0xff,0xff);
- //阴影
- $fontColor1 = ImageColorAllocate($im, 0x33,0x33,0x33);
-
- //杂点背景线
- //$lineColor1 = ImageColorAllocate($im, 130,220,245);
- //$lineColor2 = ImageColorAllocate($im, 225,245,255);
-
- //背景线
- //for($j=3; $j<=16; $j=$j+3) imageline($im,2,$j,83,$j,$lineColor1);
- //for($j=2; $j<83; $j=$j+(mt_rand(3, 10))) imageline($im,$j,2,$j-6,18,$lineColor2);
-
- //边框
- //imagerectangle($im, 0, 0, 84, 19, $iborder);
-
- $strposs = array();
- //文字
- for($i=0;$i<$rndcodelen;$i++){
- if(function_exists("imagettftext")){
- $strposs[$i][0] = $i*13+6;
- $strposs[$i][1] = mt_rand(15,18);
- imagettftext($im, 5, 5, $strposs[$i][0]+1, $strposs[$i][1]+1, $fontColor1, $font_type, $rndstring[$i]);
- } else{
- imagestring($im, 5, $i*13+6, mt_rand(2, 4), $rndstring[$i], $fontColor);
- }
- }
-
-
- //文字
- for($i=0;$i<$rndcodelen;$i++){
- if(function_exists("imagettftext")){
- imagettftext($im, 11,5, $strposs[$i][0]-1, $strposs[$i][1]-1, $fontColor2, $font_type, $rndstring[$i]);
- }
- }
-
-
- header("Pragma:no-cache\r\n");
- header("Cache-Control:no-cache\r\n");
- header("Expires:0\r\n");
- //输出特定类型的图片格式，优先级为 gif -> jpg ->png
- if(function_exists("imagejpeg")){
- header("content-type:image/jpeg\r\n");
- imagejpeg($im);
- }else{
- header("content-type:image/png\r\n");
- imagepng($im);
- }
- ImageDestroy($im);
- }else{ //不支持GD，只输出字母 ABCD
- //PutCookie("dd_ckstr","abcd",1800,"/");
- session_register('dd_ckstr');
- $_SESSION['dd_ckstr'] = "abcd";
- header("content-type:image/jpeg\r\n");
- header("Pragma:no-cache\r\n");
- header("Cache-Control:no-cache\r\n");
- header("Expires:0\r\n");
- $fp = fopen("./vdcode.jpg","r");
- echo fread($fp,filesize("./vdcode.jpg"));
- fclose($fp);
- }
- ?>
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