读取session中数组问题

$query ="select * from #@__arctype where isbaike=1";        $this->dsql->Execute("bkarry",$query);		$bkarry=array();		session_start();		if(!session_is_registered("bkarry")){								while($row2 = $this->dsql->GetArray("bkarry"))        	{				$bkarry[]=$row2;			}			$bkarry2=serialize($bkarry);			$_SESSION['bkarry']=$bkarry2;								}else{					$bkarry=unserialize($_SESSION['bkarry']);		}		//unset($_SESSION['bkarry']);   		//var_dump($bkarry);		    while($row = $bkarry)        {	var_dump($row);			        }		exit();

while($row = $bkarry) {  var_dump($row);}

session_start();$query ="select * from #@__arctype where isbaike=1";if(! isset($_SESSION['bkarry'])) {  $this->dsql->Execute("bkarry",$query);  while($row2 = $this->dsql->GetArray("bkarry"))  {    $_SESSION['bkarry'][] = $row2;  }}$bkarry =& $_SESSION['bkarry'];

foreach($bkarry as $k=>$row){}