session入mysql
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<?php
ini_set("session.save_handler","user"); //session.gc_probability = 1 分子 ini_set("session.gc_probability",1); //session.gc_divisor = 1000 分母 ini_set("session.gc_divisor",2); //session.gc_maxlifetime = 1440 垃圾回收时间,session有效期 session_set_save_handler( "open","close","read","write","destroy","gc" ); //连接数据库 function open(){ @$link = mysql_connect('127.0.0.1', 'root', 'root'); mysql_query('set names utf8'); mysql_query('use wangbin'); } function close(){ mysql_close(); } function read($sess_id){ $sql = "select session_data from `session` where session_id = '$sess_id'"; $result = mysql_query($sql); if($rows = mysql_fetch_assoc($result)){ return $rows['session_data']; } else{ return ''; } } function write($sess_id,$sess_data){ $sql = "insert into `session` (session_id,session_data,session_time) values('$sess_id','$sess_data', now()) on duplicate key update session_data = '$sess_data' , session_time = now()"; //这是为了gc() return mysql_query($sql); } function destroy($sess_id){ echo __FUNCTION__; $sql = "delete from `session` where session_id = '$sess_id'"; return mysql_query($sql); } function gc($sess_id){ $maxlifetime = ini_set("session.gc_maxlifetime"); echo __FUNCTION__; $sql = "delete from `session` where now()-session_time > '$maxlifetime' "; return mysql_query($sql); } header("content-type:text/html;charset=utf8"); session_start(); $_SESSION['name']='aa'; //echo session_id(); echo $_SESSION['name'];
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