php_错误解决_sessioin
写购物车时遇到问题，Fatal error:DangdangService::addCartItem() [<a href='dangdangservice.addcartitem'>dangdangservice.addcartitem</a>]:The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "Cart" 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
查询发现;
$car = null;
if(empty($_SESSION['car'])){
$uid = $_SESSION['uid'];
$car = DangdangService::getInstance()->createCart($uid, $bookId);
//php 特性，对象，往session存，序列化
$_SESSION['car'] = serialize($car);
//$_SESSION['car'] = $car;
}else{
$car = unserialize($_SESSION['car']);
//$car = $_SESSION['car'];
$_SESSION['car'] = serialize(DangdangService::getInstance()->addCartItem($car, $bookId));
// $_SESSION['car'] = DangdangService::getInstance()->addCartItem($car, $bookId);
}
$oSmarty->assign("items",$car->getItems());
$oSmarty->display("car.html");
php 在session 中存取对象时要序列化 :)
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