只要是PHP程序，不管是网站任意页面或程序都可使用如下代码加密，包括但不限于文章页，独立页面等！
Emlog 的文章访问密码页面
修改include/model/log_model.php 文件末尾的 authPassword 函数；将原来函数里的
if ($pwd !== addslashes($logPwd)) {
echo <<<EOT
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>emlog message</title>
<style type="text/css">
<!--
body{background-color:#F7F7F7;font-family: Arial;font-size: 12px;line-height:150%;}
.main{background-color:#FFFFFF;margin-top:20px;font-size: 12px;color: #666666;width:580px;margin:10px 200px;padding:10px;list-style:none;border:#DFDFDF 1px solid;}
-->
</style>
</head>
<body>
<div class="main">
<form action="" method="post">
请输入该文章的访问密码<br>
<input type="password" name="logpwd" /><input type="submit" value="进入.." />
<br /><br /><a href="$url">«返回首页</a>
</form>
</div>
</body>
</html>
EOT;
if ($cookiePwd) {
setcookie('em_logpwd_' . $logid, ' ', time() - 31536000);
}替换为如下代码即可：
if ($pwd !== addslashes($logPwd)) {
?>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="renderer" content="webkit">
<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no">
<title>该文章已被加密</title>
</head>
<body>
<div class="main">
<img class="alert" alt="文章已被加密" src="data:image/png;base64,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">
<form action="" method="post" class="mk-side-form">
<h2 class="pw-tip">该文章已被加密</h2>
<input type="password" name="logpwd" placeholder="请输入访问密码查看" required><button type="submit">提交</button>
<?php if($postPwd): ?>
<p id="pw-error">Oops!密码不对哦~</p>
<script>setTimeout(function() {document.getElementById("pw-error").style.display = "none"}, 2000);</script>
<?php endif; ?>
</form>
<a href="<?php echo $url; ?>" class="return-home" title="点击回到网站首页">- 返回首页 - </a>
</div>
<style type="text/css">
*{font-family:"Microsoft Yahei",微软雅黑,"Helvetica Neue",Helvetica,"Hiragino Sans GB","WenQuanYi Micro Hei",sans-serif;box-sizing:border-box;margin:0px;padding:0px;font-size:14px;-webkit-transition:.2s;-moz-transition:.2s;-ms-transition:.2s;-o-transition:.2s;transition:.2s}
html,body{width:100%;height:100%}
body{background-color:#F4F6F9;color:#768093}
input,button{font-size:1em;border-radius:3px;-webkit-appearance:none}
input{width:100%;padding:5px;box-sizing:border-box;border:1px solid #e5e9ef;background-color:#f4f5f7;resize:vertical}
input:focus{background-color:#fff;outline:none}
button{border:0;background:#6abd09;color:#fff;cursor:pointer;opacity:1;user-select:none}
button:hover,button:focus{opacity:.9}
button:active{opacity:1}
.main{width:100%;max-width:500px;height:300px;padding:30px;background-color:#fff;border-radius:2px;box-shadow:0 10px 60px 0 rgba(29,29,31,0.09);transition:all .12s ease-out;position:absolute;left:0;top:0;bottom:0;right:0;margin:auto;text-align:center}
.alert{width:80px}
.mk-side-form{margin-bottom:28px}
.mk-side-form input{float:left;padding:2px 10px;width:77%;height:37px;border:1px solid #ebebeb;border-right-color:transparent;border-radius:2px 0 0 2px;line-height:37px}
.mk-side-form button{position:relative;overflow:visible;width:23%;height:37px;border-radius:0 2px 2px 0;text-transform:uppercase}
.pw-tip{font-weight:normal;font-size:26px;text-align:center;margin:25px auto}
#pw-error {color: red;margin-top: 15px;margin-bottom: -20px;}
.return-home{text-decoration:none;color:#b1b1b1;font-size:16px}
.return-home:hover{color:#1E9FFF;letter-spacing:5px}
</style>
</body>
</html>
<?php
if ($cookiePwd) {
setcookie('em_logpwd_' . $logid, ' ', time() - 31536000);
}php独立页面加密代码
<?php
/********************************************
* 使用方法:
*
* 1、将本段代码保存为 MkEncrypt.php
*
* 2、在要加密的页面前面引入这个 php 文件
* require_once('MkEncrypt.php');
*
* 3、设置页面访问密码
* MkEncrypt('页面密码');
*
********************************************/
// 密码 Cookie 加密盐
if(!defined('MK_ENCRYPT_SALT'))
define('MK_ENCRYPT_SALT', 'Kgs$JC!V');
/**
* 设置访问密码
*
* @param $password 访问密码
* @param $pageid 页面唯一 ID 值，用于区分同一网站的不同加密页面
*/
function MkEncrypt($password, $pageid = 'default') {
$pageid = md5($pageid);
$md5pw = md5(md5($password).MK_ENCRYPT_SALT);
$postpwd = isset($_POST['pagepwd']) ? addslashes(trim($_POST['pagepwd'])) : '';
$cookiepwd = isset($_COOKIE['mk_encrypt_'.$pageid]) ? addslashes(trim($_COOKIE['mk_encrypt_'.$pageid])) : '';
if($cookiepwd == $md5pw) return; // Cookie密码验证正确
if($postpwd == $password) { // 提交的密码正确
setcookie('mk_encrypt_' . $pageid, $md5pw, time() + 3600000, '/');
return;
}
?>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="renderer" content="webkit">
<meta name="author" content="mengkun">
<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no">
<title>该页面已被加密</title>
<style type="text/css">
*{font-family:"Microsoft Yahei",微软雅黑,"Helvetica Neue",Helvetica,"Hiragino Sans GB","WenQuanYi Micro Hei",sans-serif;box-sizing:border-box;margin:0px;padding:0px;font-size:14px;-webkit-transition:.2s;-moz-transition:.2s;-ms-transition:.2s;-o-transition:.2s;transition:.2s}
html,body{width:100%;height:100%}
body{background-color:#F4F6F9;color:#768093}
input,button{font-size:1em;border-radius:3px;-webkit-appearance:none}
input{width:100%;padding:5px;box-sizing:border-box;border:1px solid #e5e9ef;background-color:#f4f5f7;resize:vertical}
input:focus{background-color:#fff;outline:none}
button{border:0;background:#6abd09;color:#fff;cursor:pointer;opacity:1;user-select:none}
button:hover,button:focus{opacity:.9}
button:active{opacity:1}
.main{width:100%;max-width:500px;height:300px;padding:30px;background-color:#fff;border-radius:2px;box-shadow:0 10px 60px 0 rgba(29,29,31,0.09);transition:all .12s ease-out;position:absolute;left:0;top:0;bottom:0;right:0;margin:auto;text-align:center}
.alert{width:80px}
.mk-side-form{margin-bottom:28px}
.mk-side-form input{float:left;padding:2px 10px;width:77%;height:37px;border:1px solid #ebebeb;border-right-color:transparent;border-radius:2px 0 0 2px;line-height:37px}
.mk-side-form button{position:relative;overflow:visible;width:23%;height:37px;border-radius:0 2px 2px 0;text-transform:uppercase}
.pw-tip{font-weight:normal;font-size:26px;text-align:center;margin:25px auto}
#pw-error {color: red;margin-top: 15px;margin-bottom: -20px;}
.return-home{text-decoration:none;color:#b1b1b1;font-size:16px}
.return-home:hover{color:#1E9FFF;letter-spacing:5px}
</style>
</head>
<body>
<div class="main">
<svg class="alert" viewBox="0 0 1084 1024" xmlns="http://www.w3.org/2000/svg" width="80" height="80">
<defs><style/></defs>
<path d="M1060.744 895.036L590.547 80.656a55.959 55.959 0 0 0-96.919 0L22.588 896.662a55.959 55.959 0 0 0 48.43 83.907h942.14a55.959 55.959 0 0 0 47.525-85.534zm-470.619-85.172a48.008 48.008 0 1 1-96.015 0v-1.567a48.008 48.008 0 1 1 96.015 0v1.567zm0-175.345a48.008 48.008 0 1 1-96.015 0V379.362a48.008 48.008 0 1 1 96.015 0v255.157z" fill="#FF9800"/>
</svg>
<form action="" method="post" class="mk-side-form">
<h2 class="pw-tip">该页面已被加密</h2>
<input type="password" name="pagepwd" placeholder="请输入访问密码查看" required><button type="submit">提交</button>
<?php if($postpwd): ?>
<p id="pw-error">Oops!密码不对哦~</p>
<script>setTimeout(function() {document.getElementById("pw-error").style.display = "none"}, 2000);</script>
<?php endif; ?>
</form>
<a href="/" class="return-home" title="点击回到网站首页">- 返回首页 - </a>
</div>
</body>
</html>
<?php
exit();
}
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