大家好，这是我的json字符串
的php代码$or_details = '{"Details":[{"ID":"1781","shiiping_country":"US","shipping_first_name":"test","shipping_last_name":"test","shipping_company":"test","shipping_address_1":"test","shipping_address_2":"test","shipping_city":"test","shipping_state":"NJ","order_date":"","shipping_post_code":"12345","email":"srathod@gmail.com","phone":"1234567890","billing_country":"US","billing_first_name":"test","billing_last_name":"test","billing_company":"test","billing_address_1":"test","billing_address_2":"test","billing_city":"test","billing_state":"NJ","billing_post_code":"12345","payment_method":"Authorize.net","order_tax":"29.4","order_total":"449.4","delivery_date":"14-05-2014","Dumpster":"DriveWay"}],"items":[{"name":"Handicap Accessible Porta Potty","quantity":"1","price":"420"}]}';
现在我要打印ID。那怎么做呢。我试过下面的代码
$json = json_decode($or_details);
echo $or_details['Details'].[ID];
请告诉我错误的地方。