[代码] [PHP]代码
http://www.oschina.net/code/snippet_83895_6963
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<?php |
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|
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if (!defined('IN_ECS')) |
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{ |
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die('Hacking attempt'); |
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} |
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|
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/*------------------------------------------------------ */ |
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//-- 该类用于将SESSION直接写入Memcache |
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/*------------------------------------------------------ */ |
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class cls_session |
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{ |
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var$db = NULL; |
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|
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var$max_life_time = 1800;// SESSION 过期时间 |
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|
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var$session_name = ''; |
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var$session_id = ''; |
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|
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var$session_expiry = ''; |
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var$session_md5 = ''; |
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|
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var$session_cookie_path = '/'; |
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var$session_cookie_domain = ''; |
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var$session_cookie_secure = false; |
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|
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var$_ip = ''; |
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var$_time = 0; |
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|
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function__construct(&$db,$session_table, $session_data_table, $session_name = 'ECS_ID', $session_id= '') |
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{ |
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$m= new Memcache; |
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$m->addServer('127.0.0.1', 11211); |
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$this->cls_session($m,$session_name, $session_id); |
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} |
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|
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functioncls_session(&$db,$session_name = 'ECS_ID', $session_id= '') |
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{ |
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$GLOBALS['_SESSION'] =array(); |
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|
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if(!empty($GLOBALS['cookie_path'])) |
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{ |
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$this->session_cookie_path =$GLOBALS['cookie_path']; |
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} |
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else |
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{ |
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$this->session_cookie_path ='/'; |
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} |
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|
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if(!empty($GLOBALS['cookie_domain'])) |
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{ |
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$this->session_cookie_domain =$GLOBALS['cookie_domain']; |
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} |
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else |
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{ |
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$this->session_cookie_domain =''; |
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} |
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|
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if(!empty($GLOBALS['cookie_secure'])) |
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{ |
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$this->session_cookie_secure =$GLOBALS['cookie_secure']; |
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} |
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else |
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{ |
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$this->session_cookie_secure = false; |
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} |
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|
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$this->session_name =$session_name; |
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|
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$this->db = &$db; |
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$this->_ip = real_ip(); |
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|
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if($session_id == '' && !empty($_COOKIE[$this->session_name])) |
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{ |
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$this->session_id =$_COOKIE[$this->session_name]; |
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} |
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else |
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{ |
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$this->session_id =$session_id; |
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} |
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|
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if($this->session_id) |
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{ |
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$tmp_session_id= substr($this->session_id, 0, 32); |
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if($this->gen_session_key($tmp_session_id) ==substr($this->session_id, 32)) |
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{ |
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$this->session_id =$tmp_session_id; |
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} |
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else |
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{ |
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$this->session_id =''; |
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} |
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} |
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|
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$this->_time = time(); |
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|
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if($this->session_id) |
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{ |
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$this->load_session(); |
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} |
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else |
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{ |
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$this->gen_session_id(); |
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setcookie($this->session_name,$this->session_id .$this->gen_session_key($this->session_id), 0,$this->session_cookie_path,$this->session_cookie_domain,$this->session_cookie_secure); |
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} |
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register_shutdown_function(array(&$this,'close_session')); |
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} |
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|
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functiongen_session_id() |
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{ |
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$this->session_id = md5(uniqid(mt_rand(), true)); |
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|
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return$this->insert_session(); |
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} |
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|
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functiongen_session_key($session_id) |
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{ |
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static$ip = ''; |
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|
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if($ip == '') |
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{ |
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$ip= substr($this->_ip, 0,strrpos($this->_ip,'.')); |
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} |
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|
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returnsprintf('%08x', crc32(!empty($_SERVER['HTTP_USER_AGENT']) ? $_SERVER['HTTP_USER_AGENT'] . ROOT_PATH .$ip . $session_id: ROOT_PATH . $ip. $session_id)); |
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} |
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|
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functioninsert_session() |
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{ |
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return$this->db->set($this->session_id,array('expiry'=>$this->_time,'ip'=>$this->_ip,'data'=>'a:0:{}'), false,$this->max_life_time); |
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} |
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|
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functionload_session() |
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{ |
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$session= $this->db->get($this->session_id); |
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if(empty($session)) |
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{ |
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$this->insert_session(); |
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$this->session_expiry = 0; |
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$this->session_md5 ='40cd750bba9870f18aada2478b24840a'; |
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$GLOBALS['_SESSION'] =array(); |
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} |
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else |
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{ |
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if(!empty($session['data']) &&$this->_time - $session['expiry'] <=$this->max_life_time) |
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{ |
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$this->session_expiry =$session['expiry']; |
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$this->session_md5 = md5($session['data']); |
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$GLOBALS['_SESSION'] = unserialize(stripslashes($session['data'])); |
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} |
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else |
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{ |
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$this->session_expiry = 0; |
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$this->session_md5 ='40cd750bba9870f18aada2478b24840a'; |
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$GLOBALS['_SESSION'] =array(); |
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} |
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} |
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} |
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|
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functionupdate_session() |
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{ |
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$adminid= !empty($GLOBALS['_SESSION']['admin_id']) ? intval($GLOBALS['_SESSION']['admin_id']) : 0; |
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$userid = !empty($GLOBALS['_SESSION']['user_id']) ? intval($GLOBALS['_SESSION']['user_id']) : 0; |
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|
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$data= serialize($GLOBALS['_SESSION']); |
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$this->_time = time(); |
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|
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if($this->session_md5 == md5($data) &&$this->_time < $this->session_expiry + 10) |
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{ |
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returntrue; |
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} |
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|
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$data= addslashes($data); |
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|
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return$this->db->replace($this->session_id,array('expiry'=>$this->_time,'ip'=>$this->_ip,'userid'=>$userid,'adminid'=>$adminid,'data'=>$data), false,$this->max_life_time); |
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} |
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|
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functionclose_session() |
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{ |
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$this->update_session(); |
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returntrue; |
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} |
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|
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functiondelete_spec_admin_session($adminid) |
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{ |
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if(!empty($GLOBALS['_SESSION']['admin_id']) && $adminid) |
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{ |
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$all_items= $this->db->getExtendedStats('items'); |
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$items= $all_items['127.0.0.1:11211']['items']; |
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foreach($items as $key => $item) { |
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if(isset($item['adminid'])) { |
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if($item['adminid'] ==$adminid) return $this->db->delete($key); |
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} |
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} |
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} |
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else |
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{ |
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returnfalse; |
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} |
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} |
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|
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functiondestroy_session() |
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{ |
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$GLOBALS['_SESSION'] =array(); |
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|
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setcookie($this->session_name,$this->session_id, 1,$this->session_cookie_path,$this->session_cookie_domain,$this->session_cookie_secure); |
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|
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/* ECSHOP 自定义执行部分 */ |
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if(!empty($GLOBALS['ecs'])) |
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{ |
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$GLOBALS['db']->query('DELETE FROM '. $GLOBALS['ecs']->table('cart') ." WHERE session_id = '$this->session_id'"); |
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} |
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/* ECSHOP 自定义执行部分 */ |
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|
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return$this->db->delete($this->session_id); |
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} |
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|
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functionget_session_id() |
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{ |
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return$this->session_id; |
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} |
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|
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functionget_users_count() |
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{ |
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$all_items= $this->db->getExtendedStats(); |
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return$count = $all_items['127.0.0.1:11211']['curr_items'];//由于有其他key的缓存，因此这只是个接近数值 |
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} |
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|
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} |
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|
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?> |
