纯代码实现WordPress文章部分内容关注微信公众号后可见

/**
* WordPress文章部分内容关注微信公众号后可见
*/
function lxtx_secret_content($atts, $content=null){
extract(shortcode_atts(array('key'=>null,'keyword'=>null), $atts));
if(isset($_POST['secret_key']) && $_POST['secret_key']==$key){
return '<div id="showMessg" class="secret-password">'.$content.'</div>';
} else if($_POST['secret_key']!=$key&&$_POST['secret_key']!=""){
return '<div class="post_hide_box"><img class="erweima" align="right" src="你的公众号二维码地址" width="150" height="150" alt="辉哥博客"><div class="post-secret"></i>验证码输入错误，请重新输入！</div><form action="'.get_permalink().'" method="post"><span>验证码：</span><input id="pwbox" type="password" size="19" name="secret_key"><a class="a2" href="javascript:;"><input type="submit" value="提交" name="Submit"></a></form><div class="details">请关注“辉哥博客”官方微信公众号，回复关键字“<span>'.$keyword.'</span>”，获取验证码。</div></div>';
}else{
return '<div class="post_hide_box"><img class="erweima" align="right" src="你的公众号二维码地址" width="150" height="150" alt="辉哥博客"><div class="post-secret"></i>此处内容已经隐藏，请输入验证码查看内容！</div><form action="'.get_permalink().'" method="post"><span>验证码：</span><input id="pwbox" type="password" size="19" name="secret_key"><a class="a2" href="javascript:;"><input type="submit" value="提交" name="Submit"></a></form><div class="details">请关注“辉哥博客”官方微信公众号，回复关键字“<span>'.$keyword.'</span>”，获取验证码。</div></div>';
}
}
add_shortcode('gzh2v', 'lxtx_secret_content');

.post_hide_box, .secret-password{
background: none repeat scroll 0 0 #fcffff;
border: 1px dashed #24b4f0;
color: #123456;
padding: 10px;
border-radius: 9px;
margin: 18px 0px;
overflow:hidden;
clear:both;
}
.post_hide_box .post-secret{
font-size: 18px;
line-height:20px; 
color:#f0503c; 
margin:5px;
}
.post_hide_box form{ margin:15px 5px;}
.post_hide_box form span{ font-size:18px; font-weight:bold;}
.post_hide_box .erweima{ margin: 15px;}
.post_hide_box input[type=password]{
color: #00a0f0;
padding: 5px;
background-color: #fff;
border: 1px solid #24b4f0;
border-radius: 5px;
font-size: 12px;
margin: 6px 7px 6px 0px;
-moz-transition: border .25s linear,color .25s linear,background-color .25s linear; 
-webkit-transition: border .25s linear,color .25s linear,background-color .25s linear; -o-transition: border .25s linear,color .25s linear,background-color .25s linear; 
transition: border .25s linear,color .25s linear,background-color .25s linear;
}
.post_hide_box input[type=submit] { 
background: #24b4f0; 
border: none; 
padding: 5px;
width: 88px; 
color: #fff; 
border-radius: 5px; 
font-size: 16px;
font-weight:bold;
}
.details{
color:#123456;
font-size: 16px;
line-height: 30px;
margin: 5px;
padding: 3px;
}
.post_hide_box .details span{color:#e74c3c;}

【gzh2v keyword="关键字" key="验证码"】【/gzh2v】
说明：将【】换成[]