//初始化顧客資料
<?php
	class NsysuStudent
	{
		var $owner_number;
		var $SSN;
		var $gender;
		var $name;
		var $tel;
		var $grade;
		var $email;
		
		function NsysuStduent($owner_number)
		{
			settype($this->owner_number , "String");
			settype($this->SSN , "String");
			settype($this->gender , "Integer");
			settype($this->name , "String");
			settype($this->tel , "String");
			settype($this->grade , "String");
			settype($this->email , "String");
			
			$this->owner_number = $owner_number;
		}
	}	   
?>

//紀錄使用者資訊
if(!isset($_SESSION['bag']))
	{
	    $owner_id = session_id();
	    $customer = new NsysuStudent($owner_id);
	    $bag = new bag($owner_id);
	    $_SESSION['bag'] = $bag;
	    $_SESSION['customer'] = $customer;
	    $cont = 0;
	}