Php+memcache implementation of the website online number of people statistics

<?PHP$MC=NewMemcache ();//Connection Memcache$MC->connect ("127.0.0.1",11211 ); //Get online user IP and online time data$online _members = $MCGet('online_members' ); //if NULL, initialize the dataif(!$online _members) {$online _members=array ();} //Get User IP$ip = $_server ["REMOTE_ADDR"]; //Reset online time for access users$online _members [$ip] =Time ();foreach($online _members as$k =$v) { //If the page is not visited after three minutes, it is just considered expired if(Time ()-$v > the) {unset ($online _members[$k]);}} //Reset Online User Data$mcSet('online_members', $online _members); //regain access to online user data$online _members = $MCGet('online_members' ); //Enter statistics online numberecho Count ($online _members);?>

  // 获取所有浏览次数 function get_all_visit_number() {   $mc = new Memcache ();     // 使用wordpress自带wpdb类   global $wpdb ;     // 参数表   $table = "wp_options" ;     // 连接memcache   $mc ->connect ( "127.0.0.1" , 11211 );     // 获取浏览次数   $visit_number = $mc ->get ( ‘visit_number‘ );     // Memcache 中是否存有访问次数   if (! $visit_number ) {   // 不存在时，查询数据库   $querystr = "SELECT `option_value` FROM " . $table . " WHERE `option_name`=‘visit_number‘" ;   $results = $wpdb ->get_results( $querystr );     // 把数据库中存储的值赋予memcache变量   $visit_number = intval ( $results [0]->option_value);   }     // 设置浏览次数   $mc ->set ( ‘visit_number‘ , ++ $visit_number );     // 获取浏览次数   $visit_number = $mc ->get ( ‘visit_number‘ );     // 每达100次访问量，更新到数据库   if ( $visit_number % 100 == 0) {   // 使用wordpress自带wpdb类   $data_array = array (    ‘option_value‘ => $visit_number   );     $where_clause = array (    ‘option_name‘ => ‘visit_number‘   );     $wpdb ->update( $table , $data_array , $where_clause );   }     // 关闭memcache连接   $mc ->close ();     return $visit_number ; }

Web site online statistics implemented by Php+memcache