探讨如何把session存入数据库

CREATE DATABASE 'session'; 创建表结构 CREATE TABLE 'session'( id CHAR(30) NOT NULL  , 'user 'CHAR(30), data CHAR(3000) ,PARMIRY BY ('id') );

<?php
 $con =mysql_connection("127.0.0.1","user" , "pass");
        mysql_select_db("session");
function open($save_path, $session_name)
{
    return(true);
}
function close()
{
  return(true);
}
function read($id)
{
   if($result = mysql_query("SELECT FROM session WHERE id='$id'"))
     {
        if($row = mysql_felth_row($result ))
           {  return $row["data"]; }
      }
   else
     {
      return "";
      }
}
function write($id, $sess_data)
{
  if($result = mysql_query("UPDATE session SET data='$sess_data' WHERE id='$id'"))
     {
        return true;
      }
   else
     {
      return false;
      }
}
function destroy($id)
{
 if($result = mysql_query("DELETE FROM  session WHERE id='$id'"))
     {
        return true;
      }
   else
     {
      return false;
      }
}
/
WARNING - You will need to implement some
sort of garbage collection routine here. 
/
function gc($maxlifetime)
{
  return true;
}
session_set_save_handler("open", "close", "read", "write", "destroy", "gc");
session_start();
// proceed to use sessions normally
?>