PHP汉字验证码的实现

root , 2007/08/21 23:36 , PHP , 评论(0) , 阅读(5889) , Via 本站原创

<?php    
/*    
* 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");    
?>

<?php    
/*    
* 文件:check.php    
* 作用:验证    
* 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! 
*/    
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 = "<p style=\"font-size:12px;color:#009900\">验证成功!</p>";    
        else    
            $errorMSG = "<p style=\"font-size:12px;color:#FF0000\">验证失败!</p>";    
}    
?>    
<html>    
<head>    
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">    
</head>    
<body>    
<?php    
if($errorMSG){    
echo $errorMSG;    
}    
?>    
<form action=<?php echo $_SERVER['PHP_SELF']?> method=post>    
请输入验证码：<input type="text" name="code" style="width:    
80px"><img src="code.php">    
<?php    
/*    
* 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");    
?>

<?php    
/*    
* 文件:check.php    
* 作用:验证    
* 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! 
*/    
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 = "<p style=\"font-size:12px;color:#009900\">验证成功!</p>";    
        else    
            $errorMSG = "<p style=\"font-size:12px;color:#FF0000\">验证失败!</p>";    
}    
?>    
<html>    
<head>    
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">    
</head>    
<body>    
<?php    
if($errorMSG){    
echo $errorMSG;    
}    
?>    
<form action=<?php echo $_SERVER['PHP_SELF']?> method=post>    
请输入验证码：<input type="text" name="code" style="width:    
80px"><img src="code.php">    
<br/>    
<input type="submit" name="check" value="提交验证码">    
</form>    
<script type='text/javascript'>
//<![CDATA[
if (document.getElementById('processtime')) document.getElementById('processtime').innerHTML="<span class='runtimedisplay'>Run in 36 ms, 7 Queries.</span>";
//]]>
</script></body>    
</html>

<?php    
/*    
* 文件:code.php    
* 作用:验证码生成    
* 作者:PHP实战群:33918040 - 鱼尾唯一    
* 网址:http://bbs.ailf.cn/ http://www.fishwei.com/    
* 特注:由 没牙的草 指导 版权所有转载注明出处!有付出才会有收获!  
*/    
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);    
?><br/>    
<input type="submit" name="check" value="提交验证码">    
</form>    
<script type='text/javascript'>
//<![CDATA[
if (document.getElementById('processtime')) document.getElementById('processtime').innerHTML="<span class='runtimedisplay'>Run in 36 ms, 7 Queries.</span>";
//]]>
</script></body>    
</html>

// 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);    
?>