PHP Session MySQL资源

是否可以将mysql资源分配给$_SESSION变量？

//MysqLdb.inc.PHP
class MysqLDb
{
    private $link;

    public function __construct($_host = '', $_db = '', $_user = '', $_pwd = '')
    {
           $link = MysqL_pconnect(...);
    }

    public function query($data)
    {
           $r = MysqL_query($data, $this->link);
           return $r;
    }
}


//index.PHP
session_start();
include_once('MysqLdb.inc.PHP');

$sqlobj = new MysqLDb();
$sqlobj->dbconnect($db_host, $db_name, $db_user, $db_pwd);
$_SESSION['MysqLdb'] = $sqlobj;


//check.PHP
session_start();
include_once('MysqLdb.inc.PHP');

$sqlobj = $_SESSION['MysqLdb'];
$sqlobj->query(...);

$sqlobj-> query(…)返回

Fatal error: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class deFinition “MysqLDb” of the object you are trying to operate on was loaded before unserialize() gets called or provide a __autoload() function to load the class deFinition in D:\apache\www\check.PHP on line 4`

如果我使用$_SESSION [‘MysqLdb’] = serialize($sqlobj)和$sqlobj = unserialize($_ SESSION [‘MysqLdb’]),则会出现此错误：

Warning: MysqL_query() expects parameter 2 to be resource, integer given in D:\apache\www\MysqLdb.inc.PHP on line …

解决方法:

您无法保留PHP资源.

就是这样-您只是不能.因此,您每次都需要连接到数据库.