PHP uses redis to implement statistical cache mysql pressure, redismysql_PHP tutorial

PHP uses redis to implement statistical caching mysql pressure, redismysql

This article describes the example of PHP using redis to implement statistical caching mysql pressure. Share it with everyone for your reference, the details are as follows:

<&#63;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&#63;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);
*/

I hope this article will be helpful to everyone in php programming design.

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