Blog welcome prompt function implemented in PHP (very special)

The implementation effect of the following code:

1. Welcome words are displayed for visitors who leave messages
2. General visitor source tips
3. No-leave divers (refresh more than 7 times, urge to leave messages)
4. Push update tips for IE

Usage: Call the corresponding function, such as welcome_msg().

Copy code The code is as follows:

/**
* 欢迎词
* 以前的欢迎词在右上角提示.
* 实现原理:
* 通过$_SERVER['HTTP_REFERER']判断来路
* 通过$_SERVER["HTTP_USER_AGENT"]判断用户使用的浏览器
* 通过$_COOKIE["comment_author_" . COOKIEHASH]判断为评论者
*
*/
function welcome_msg(){

if($m = apply_filters('welcome_msg',$string)){
echo $m;
return;
}
global $referer;
$referer=$_SERVER['HTTP_REFERER'];
$hostinfo=parse_url($referer);
$host_h=$hostinfo["host"];
$host_p=$hostinfo["path"];
$host=array($host_h,$host_p);
if(substr($host_h, 0, 4) == 'www.')
$host_h = substr($host_h, 4);
$host_h_url='$host_h';

    //直接输入没有东西
  if($referer==""){
   echo "\n";
   if($_COOKIE["comment_author_" . COOKIEHASH]!=""){
    echo 'Howdy, '.$_COOKIE["comment_author_" . COOKIEHASH].', 欢迎回来';
   }else{
    echo "您直接访问了本站! 莫非您记住了我的域名.厉害~我倍感荣幸啊嘿嘿";
   }
  //搜索引擎
   //baidu
  }elseif(preg_match('/baidu.*/i',$host_h)){
   echo "您通过百度找到了我! 厉害.你要是能够订阅我的博客那就更好了.我经常分享一些好东西哦";
   //google
  }elseif(!preg_match('/www\.google\.com\/reader/i',$referer) && preg_match('/google\./i',$referer)){
   echo "您通过 Google 找到了我! 厉害. 你要是能够订阅我的博客那就更好了. 我经常分享一些好东西哦";
   //yahoo
  }elseif(preg_match('/search\.yahoo.*/i',$referer) || preg_match('/yahoo.cn/i',$referer)){
   echo "您通过 Yahoo 找到了我! 厉害. 你要是能够订阅我的博客那就更好了. 我经常分享一些好东西哦";
  //阅读器
   //google
  }elseif(preg_match('/google\.com\/reader/i',$referer)){
   echo "感谢你通过 Google 订阅我! 既然过来读原文了. 欢迎留言指导啊.嘿嘿 ^_^";
   //xianguo
  }elseif(preg_match('/xianguo\.com\/reader/i', $referer)){
   echo "感谢你通过鲜果订阅我! 既然过来读原文了. 欢迎留言指导啊.嘿嘿 ^_^";
   //zhuaxia
  }elseif(preg_match('/zhuaxia\.com/i', $referer)){
   echo "感谢你通过抓虾订阅我! 既然过来读原文了. 欢迎留言指导啊.嘿嘿 ^_^";
   //哪吒
  }elseif(preg_match('/inezha\.com/i', $referer)){
   echo "感谢你通过哪吒订阅我! 既然过来读原文了. 欢迎留言指导啊.嘿嘿 ^_^";
   //有道
  }elseif(preg_match('/reader\.youdao/i', $referer)){
   echo "感谢你通过有道订阅我! 既然过来读原文了. 欢迎留言指导啊.嘿嘿 ^_^";
   //自己
  }elseif(self()){
   echo ""."\n";
  }elseif($_COOKIE["comment_author_" . COOKIEHASH]!=""){
   echo 'Howdy, '.$_COOKIE["comment_author_" . COOKIEHASH].'欢迎从'.$host_h.'回来';
  }else{
   echo '欢迎来自'. $host_h.'的朋友. 我经常分享一些好东西哦 ^_^ 欢迎订阅我的博客.';
  }

}
//判断是自己的函数
function self(){
$local_info = parse_url(get_option('siteurl'));
    $local_host = $local_info['host'];
//check self
if ( preg_match("/^http:\/\/(\w+\.)?($local_host)/",$_SERVER['HTTP_REFERER']) != 0) return true;
}

/**
* 分析浏览器对于使用IE老版本的用户推送提醒
* 不要过分推送, 根据cookie判断
* 比如对IE6的推送! 我希望是每隔20秒要有一次!
* @see setcookie_for_ie()
*/
function killIE($msg){
if(preg_match('/MSIE\s6/i', $_SERVER['HTTP_USER_AGENT'])){
if(!$_COOKIE['alert_ie_visitor_'.COOKIEHASH]){
$msg .= '

呃~ , 我不得不再提示一下:

';
$msg .= '

您正在使用古老的 Internet Explorer 浏览网页, 该浏览器不符合W3C国际标准, 本站网页可能显示不正常,或部分功能无法使用

如果您升级到 Internet Explorer 8 或转换到另一个浏览器, 本站将能为您提供更好的服务.

';
   //add_action('init', 'setcookie_for_alert_ie_visitor');
  }
}elseif(preg_match('/MSIE\s7/i', $_SERVER['HTTP_USER_AGENT'])){
  if(!$_COOKIE['alert_ie_visitor_'.COOKIEHASH]){
   $msg .= '

呃~ , 顺便提示一下:

';
$msg .= '

您正在使用旧版本的 Internet Explorer 版本浏览网页，如果您升级到 Internet Explorer 8 或转换到另一个浏览器, 本站将能为您提供更好的服务.

';
  }
}elseif(preg_match('/MSIE\s8/i', $_SERVER['HTTP_USER_AGENT'])){
  if(!$_COOKIE['alert_ie_visitor_'.COOKIEHASH]){
   $msg .= '

呃~ , 顺便提示一下:

';
$msg .= '

很高兴看到你使用较高版本的 Internet Explorer 浏览器! 但是我还是要向您推荐:
速度最快的 Chrome 和定制性最强的 Firefox

';
}
}else{
return;
}

return $msg;

}
add_filter('welcome_msg','killIE');

/**
* 对于来了很多次也不评论的家伙提醒
* 创建一个cookie用来计数
* 结合ajax评论函数,评论后将计算器设置为-5
* 这样评论后可以有个较长的缓和期
* @since 2.0.1
* @see welcome_msg, setcookie_for_alert_commentator
* 修改了cookies的写入方法,这里只读取cookies
*/
function alert_commentator($msg){
global $user_ID;
//管理员是个例外.不能对管理员推送!
if($user_ID){
return;//just return null;
}

if(!isset($_COOKIE['comment_author_visit_times_'.COOKIEHASH]))
return;//

//当次数>=6次时推送提示
//由于在init上写入cookie所以实际上要等cookie累加到7是才显示提示!
if(((int)$_COOKIE['comment_author_visit_times_'.COOKIEHASH])>=6){
  if($comment_author = $_COOKIE['comment_author_'.COOKIEHASH])
   $msg = '嗨~,  '.$comment_author.' 我发现你来了很多次也没有留言! 欢迎发表你的看法.';
  else
   $msg = '新朋友? 老朋友? 我看你来了很多次却没有留言.欢迎发表你的看法.';
}else{
  return;//
}

return $msg;
}
add_filter('welcome_msg','alert_commentator');

/**
* Set up a calculator for visitors
*
* Function:
* However, the visitor keeps browsing and the counter does not work
* After leaving a message, the counter will be reduced to -5
*
* @since 2.0.2
*/
function setcookie_for_alert_commentator(){
if(is_bot())
return;
global $user_ID;
if($user_ID)
return;
//If there is no counter, write
if(!isset($_COOKIE['comment_author_visit_times_'.COOKIEHASH])){
setcookie('comment_author_visit_times_'.COOKIEHASH, 1, time() + (60*60*24*300), COOKIEPATH, COOKIE_DOMAIN);
}else{
$visit_times = (int)$_COOKIE['comment_author_visit_times_'.COOKIEHASH];
setcookie('comment_author_visit_times_'. COOKIEHASH, ++$visit_times, time() + (60*60*24*300), COOKIEPATH, COOKIE_DOMAIN);
}

//Stop pushing when the number is greater than 7 because it has been pushed 2 times in a row
if(((int)$_COOKIE['comment_author_visit_times_'.COOKIEHASH])>=7){
//Settings Reset to 0
setcookie('comment_author_visit_times_'. COOKIEHASH, -2, time() + (60*60*24*300), COOKIEPATH, COOKIE_DOMAIN);
}
}
add_action( 'init', 'setcookie_for_alert_commentator');

/**
* Set different cookies for different versions of ie
*
* For future push upgrade notifications
*/
function setcookie_for_ie(){
if(isset($_COOKIE['alert_ie_visitor_'.COOKIEHASH]))
return;
if(preg_match(' /MSIEs6/i', $_SERVER['HTTP_USER_AGENT'])){
//For those who use the old version of ie with frequent push (cookies expire in 5 minutes)
setcookie('alert_ie_visitor_'.COOKIEHASH,'ie6', time()+(20),COOKIEPATH,COOKIE_DOMAIN);

}elseif(preg_match('/MSIEs7/i', $_SERVER['HTTP_USER_AGENT'])){
//Reduce push for users using ie7 (cookies expire in 3 days)
setcookie('alert_ie_visitor_ '.COOKIEHASH,'ie7',time()+(60*60*24*3),COOKIEPATH,COOKIE_DOMAIN);

}elseif(preg_match('/MSIEs8/i', $_SERVER['HTTP_USER_AGENT'])){
//Try not to push for those using ie8 (cookies expire in 100 days)
setcookie(' alert_ie_visitor_'.COOKIEHASH,'ie8',time()+(60*60*24*10),COOKIEPATH,COOKIE_DOMAIN);
}
}
add_action('init', 'setcookie_for_ie');

Blog welcome prompt function implemented in PHP (very special)_PHP tutorial