文章部分内容加密

默认的公开程度是影响整篇文章的，从JKooll那里抄了个方法来加密段落。

首先在主题的functions.php里面加上一个function：

//Usage: 
输入密码查看加密内容：
      

function e_secret($atts, $content=null) {
	extract(shortcode_atts(array('key' => null, 'tip' => null), $atts));
	if (
		isset($_SESSION[hash('md5', $key)]) ||
		(isset($_POST['e_secret_key']) && $_POST['e_secret_key'] == $key)
	) {
		$_SESSION[hash('md5', $key)] = $key;
		return '<div class="e-secret">' . $content . '</div>';
	} else {
		if (isset($_POST['e_secret_key'])) {
			$tip = '<p class="secret_tip">密码输入错误！</p>' . $tip;
		}
		return '<form class="e-secret" action="'.get_permalink().'" method="post" name="e-secret"><label>输入密码查看加密内容：</label><input type="password" name="e_secret_key" class="euc-y-i" maxlength="50"><input type="submit" class="euc-y-s" value="确定">
      <div class="euc-clear"></div></form>' . '<p class="secret_tip">' . $tip . '</p>';
	}
}
add_shortcode('secret', 'e_secret');

用法就是，如果在新式编辑器里，要添加一个html区块，然后这样把内容包起来：

输入密码查看加密内容：
      
我是提示信息

最后添加css样式优化一下外观：

.e-secret {
 margin: 20px 0;
 padding: 20px;
 background: #f8f8f8;
}
.e-secret input.euc-y-i[type="password"] {
 float: left;
 background: #fff;
 width: 100%;
 line-height: 36px;
 margin-top: 5px;
 border-radius: 3px;
}
.e-secret input.euc-y-s[type="submit"] {
 float: right;
 margin-top: -47px;
 width: 30%;
 margin-right: 1px;
 border-radius: 0 3px 3px 0;
}
input.euc-y-s[type="submit"]{
	background-color:#3498db;
	color:#fff;
	font-size:21px;
	box-shadow:none;
	-webkit-transition: .4s;
	-moz-transition: .4s;
	-o-transition: .4s;
	transition:.4s;
	-webkit-backface-visibility:hidden;
	position:relative;
	cursor:pointer;
	padding: 13px 20px;
	text-align: center;
	border-radius: 50px;
	-webkit-box-shadow: none;
	-moz-box-shadow: none;
	box-shadow: none;
	border: 0;
	height: auto;
	outline: medium;
	line-height: 20px;
	margin: 0;
}
input.euc-y-s[type="submit"]:hover{
	background-color:#5dade2;
}
input.euc-y-i[type="text"],input.euc-y-i[type="password"]{
	border:1px solid #F2EFEF;
	color:#777;
	display:block;
	background: #FCFCFC;
	font-size:18px;
	transition:all .5s ease 0;
	outline:0;
	box-sizing:border-box;
	-webkit-border-radius:25px;
	-moz-border-radius:25px;
	border-radius:25px;
	padding:5px 16px;
	margin: 0;
	height: auto;
	line-height: 30px;
}
input.euc-y-i[type="text"]:hover,input.euc-y-i[type="password"]:hover{
	border:1px solid #56b4ef;
	box-shadow:0 0 4px #56b4ef;
}

p.secret_tip {
	clear: both;
}