购物车2数据处理session.txt

 $gname,
		'gnum'=>1
	];
	print_r($_SESSION);
}else{
	//判断是否有该商品
	if(array_key_exists($gid, $_SESSION['cart'])){
		$_SESSION['cart'][$gid]['gnum']+=1;
	}else{
	//没有直接添加
     $_SESSION['cart'][$gid]=[
	'gname'=>$gname,
	'gnum'=>1
	];
	}
}
echo "
";
print_r($_SESSION['cart']);
echo "点击购买<>";
?>