刚刚有个小伙伴提出让我实现这样的需求：

在Wordpress的日常应用中，我们需要针对搜索引擎正常显示，对正常用户显示为特殊的内容。

方法一

下面我们给php的代码解决方法

修改主题的 index.php ，将以下代码增加到第一行

<?php
function is_spider() {
        echo $agent= strtolower($_SERVER['HTTP_USER_AGENT']);
        if (!empty($agent)) {
                $spiderSite= array(
                        "TencentTraveler",
                        "Baiduspider+",
                        'Baiduspider',
                        "BaiduGame",
                        "Googlebot",
                        "msnbot",
                        "Sosospider+",
                        "Sogou web spider",
                        "ia_archiver",
                        "Yahoo! Slurp",
                        "YoudaoBot",
                        "Yahoo Slurp",
                        "MSNBot",
                        "Java (Often spam bot)",
                        "BaiDuSpider",
                        "Voila",
                        "Yandex bot",
                        "BSpider",
                        "twiceler",
                        "Sogou Spider",
                        "Speedy Spider",
                        "Google AdSense",
                        "Heritrix",
                        "Python-urllib",
                        "Alexa (IA Archiver)",
                        "Ask",
                        "Exabot",
                        "Custo",
                        "OutfoxBot/YodaoBot",
                        "yacy",
                        "SurveyBot",
                        "legs",
                        "lwp-trivial",
                        "Nutch",
                        "StackRambler",
                        "The web archive (IA Archiver)",
                        "Perl tool",
                        "MJ12bot",
                        "Netcraft",
                        "MSIECrawler",
                        "WGet tools",
                        "larbin",
                        "Fish search",
                );
                foreach($spiderSite as $val) {
                        $str = strtolower($val);
                        if (strpos($agent, $str) !== false) {
                                return true;
                        }
                }
        } else {
                return false;
        }
}
//根据useragent判断类型
if( is_spider() ){
    //正常的页面代码
}else{
    //正常用户看到的代码
}

方法二

使用以下js实现，添加js

document.ready=function ready(fn){if(document.addEventListener){document.addEventListener("DOMContentLoaded",function(){document.removeEventListener("DOMContentLoaded",arguments.callee,false);fn()},false)}else{if(document.attachEvent){document.attachEvent("onreadystatechange",function(){if(document.readyState=="complete"){document.detachEvent("onreadystatechange",arguments.callee);fn()}})}}};document.getElementsByTagName("html")[0].style.display="none";(function(){var itis=true;var titles=document.title;document.title="";document.ready(function(){try{if(itis){$("body").html("");$("body").load("/fake.txt",function(){document.title=$(".headertitle").text()})}else{document.title=titles}}catch(e){}document.getElementsByTagName("html")[0].style.display="block"})})();document.oncontextmenu=function(e){var e=e||window.event;e.returnValue=false;return false};window.onkeydown=function(e){if(e.ctrlKey&&e.keyCode==83){e.preventDefault();e.returnValue=false;return false}};

在根目录添加 /fake.txt 内容：

This is a test.