PHP access data cache processing

This article talks about PHP access data caching processing, using Redis or Memcache as the cache of MySQL, and using the ThinkPHP framework.

Method 1

• Use ThinkPHP’s S method:

$savedata['uid']=session('uid');
$savedata['ip']=$_SERVER['REMOTE_ADDR'];    
$savedata['url']=$_SERVER['REQUEST_URI'];         
$savedata['created_time']=time();
$savedata['created_by']=session('uid');

$cache = S(array('type'=>'redis','host'=>'127.0.0.1','port'=>'6379','prefix'=>'think','expire'=>600000));
// 获取缓存
$visitor_data = $cache->visitor_data;
if(empty($visitor_data)){
    $visitor_data=array();
}
array_push($visitor_data, $savedata);

// 设置缓存
$cache->visitor_data = $visitor_data;

if(count($visitor_data)>3){
    foreach ($visitor_data as $key => $value) {
      　$m = M("VisitorLog");
        $m->add($value);
    }
    // 删除缓存
    unset($cache->visitor_data);
}

---

Method 2

• Use Redis

$savedata['uid']=session('uid');
$savedata['ip']=$_SERVER['REMOTE_ADDR'];    
$savedata['url']=$_SERVER['REQUEST_URI'];         
$savedata['created_time']=time();
$savedata['created_by']=session('uid');

// 连接本地的 Redis 服务
$redis = new \Redis();
$redis->connect('127.0.0.1', 6379);

//查看服务是否运行
if(empty($redis)){
    return dataResult(null,'',0);            
}
//存储数据到列表中
$redis->lpush("visitor_data",json_encode($savedata));
// 获取存储的数据并输出
$len=$redis->llen("visitor_data");
if($len>2){
    $visitor_data = $redis->lrange("visitor_data",0,$len);
    foreach ($visitor_data as $key => $value) {
        $m = M("VisitorLog");
        $m->add(json_decode($value,true));
    }
    $redis->del("visitor_data");
}

Method 3

• Use Memcache:

$savedata['uid']=session('uid');
$savedata['ip']=$_SERVER['REMOTE_ADDR'];    
$savedata['url']=$_SERVER['REQUEST_URI'];         
$savedata['created_time']=time();
$savedata['created_by']=session('uid');

$memcache = new \Memcache;             //创建一个memcache对象
$memcache->connect('127.0.0.1', 11211) or die ("Could not connect"); //连接Memcached服务器
$visitor_data = $memcache->get('visitor_data');   //从内存中取出key的值
if(empty($visitor_data)){
    $visitor_data=array();
}
if(count($visitor_data)>2){
    foreach ($visitor_data as $key => $value) {
        $m = M("VisitorLog");
        $m->add($value);
    }
    unset($visitor_data);
    $visitor_data=array();
}
array_push($visitor_data,$savedata);
$memcache->set('visitor_data', $visitor_data);        //设置一个变量到内存中，名称是key 值是test

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