PHP使用redis实现统计缓存mysql压力的方法

<?php
  header("Content-Type:text/html;charset=utf-8");
  include lib/mysql.class.php;
  $mysql_obj = mysql::getConn();
  //redis 
  $redis = new Redis();
  $redis->pconnect(127.0.0.1, 6379);
  if(isset($_SERVER[HTTP_REFERER])){
    $url_md5 = md5($_SERVER[HTTP_REFERER]);
  }
  $adve_key = adve; 
  $adve_key_exists = adve_exists;
  if(!$redis->exists($adve_key_exists)){
    $list = $mysql_obj->fetch_array("select * from user_online_adve");
    if($list){
      foreach ($list as $key => $value) {
        $url_hash = md5($value[adve_url]);
        $adve_hash_key = $adve_key.":".$url_hash;
        $id = $value[id];
        $redis->set($adve_hash_key,$id);
        $redis->set($adve_key_exists,true);
        //$redis->hmset($adve_hash_key, array(id =>$id));
        //print_r($redis->get($adve_hash_key));
      }
    }
  }
  $adve_new_key = $adve_key.:.$url_md5;
  if($redis->exists($adve_new_key)){
      $adve_plus = $adve_new_key.":plus" ;
      if(!$redis->exists($adve_plus)){
        $redis->set($adve_plus,1); 
      }else{
        $redis->incr($adve_plus);
        $num = $redis->get($adve_plus);
        if($num >10){
          $id = $redis->get($adve_new_key);
          // insert to sql;
          $mysql_obj->query("update user_online_adve set adve_num=adve_num+$num where id=$id");
          $redis->set($adve_plus,1);
        }
      }
  }
  header(HTTP/1.0 301 Moved Permanently);
  header(Location: https://itunes.apple.com/cn/app/san-guo-zhi15-ba-wangno-da-lu/id694974270?mt=8);
/*
  if(){
      $adve_plus = $adve_key.":plus" ;
      if($redis->exists($adve_plus)){
        $redis->incr($adve_plus);
      }else{
        $redis->set($adve_plus,1); 
      }
      echo $redis->get($adve_plus);
  }
  foreach ($list as $key => $value) {
      $url_hash = md5($value[adve_url]);
      $id = $value[id];
      $adve_num = $value[adve_num];
      $adve_plus = $adve_key.":plus" ;
      if($redis->exists($adve_plus)){
        $redis->incr($adve_plus);
      }else{
        $redis->set($adve_plus,1); 
      }
      echo $redis->get($adve_plus);
      //if($redis->)
      //$redis->hmset($adve_key, array(id =>$id, adve_num=>$adve_num));
      //print_r($redis->hmget("adve:$url_hash", array(adve_num)));
  }
    print_r($list);
*/