本文實例講述了PHP使用redis實現統計緩存mysql壓力的方法。分享給大家供大家參考，具體如下：

<?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);

*/

希望本文所述對大家php程序設計有所幫助。