使用会话生成的信息更新mysql表

I'm currently doing a Web Programming module at university and have been having trouble with some of the homework set. We are meant to insert code that updates our current mysql table with new information (gender, age, email, comment). This information needs to be inserted into the row of each persons session generated ID (currID). How do we code for the updated information to be inserted into a session-specific row? I'm currently doing a Web Programming module at