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PHP实例:PHP汉字验证码的实现_[PHP教程]

PHP实例:PHP汉字验证码的实现_[PHP教程]

PHP实例:PHP汉字验证码的实现_[PHP教程]

/*
* 文件:chinesechar.php
* 作用:汉字数据储存
* 作者:PHP实战群:33918040 - 鱼尾唯一
* 网址:http://bbs.ailf.cn/ http://www.fishwei.com/
* 特注:版权所有转载注明出处!有付出才会有收获!
*/
ChineseChar = array("人","出","来","友","学","孝","仁","义","礼","廉","忠","国","中","易","白","者","火 ","土","金","木","雷","风","龙","虎","天","地", "生","晕","菜","鸟","田","三","百","钱","福 ","爱","情","兽","虫","鱼","九","网","新","度","哎","唉","啊","哦","仪","老","少","日", "月 ","星");
?>


session_start();
errorMSG = '';
//验证用户输入是否和验证码一致
if(!is_null(_POST['check']))
{
if (strcasecmp(_SESSION['code'],_POST['code'])==0)
errorMSG = "

验证成功!

";
else
errorMSG = "

验证失败!

";
}
?>





if(errorMSG){
echo errorMSG;
}
?>
method=post>
请输入验证码:






include_once("chinesechar.php");
session_start();
// 设置 content-type
header("Content-type: image/png");
// 创建图片
im = imagecreatetruecolor(120, 30);


// 创建颜色
fontcolor = imagecolorallocate(im, 255, 255, 255);
bg = imagecolorallocate(im, 0, 0, 0);


// 设置文字
for(i=0;i<4;i++) text .= ChineseChar[(array_rand(ChineseChar))];


_SESSION['code'] = text;
// 设置字体
font = 'simkai.ttf';


// 添加文字
imagettftext(im, 18, 0, 11, 21, fontcolor, font, iconv("GB2312","UTF-8",text));


// 输出图片
imagepng(im);
imagedestroy(im);
?>








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