eBay API下载用户列表(eBay API用户指南/步骤指南)

I am new to the eBay API and currently developing in PHP, I have managed to use GetItem to import details of an order based on the Item ID to my website's database. But What I want to do now is to link a users account to my website and import their listings to my database. I have put the code I used for GetItem (below) but now I am stuck and I don't know what to use, GetAccount, GetUser or GetSellerList to:I am new to the eBay API and currently developi