使用PHP存储多个文件的路径

Question

I am working on an application, where the user has to upload files in a cart.eg the user upload the file "A" and now doing different work. After some time he again upload another file, file "B". How I can manage the file path or store the file path, as if I use move_uploaded_file() function, then it can overwrite the other user's file with same file name.

Thanks.

Answer 1

When I've had this issue, I have used a timestamp added to the filename. Usually I want to cleanse the filename anyway, so I

1. replace characters I don't like
2. remove the file extension and check it looks OK (eg pdf not exe)
3. add a timestamp to the filename
4. put the extension back on

Obviously, this isn't suitable in every instance, but it might give you some ideas.

Answer 2

You use php's time function to generate a timestamp that you append to the filename so that they can be different. Then you can use a column in the db to store the file paths. You could store all the file paths in the same column but separate each one with ; or any other character. To get the separate paths, you can use php's explode function.

Answer 3

Create folder run time against session id, that way only current session user files goes to the folder.

temp_uploads/ (main uploads folder)

temp_uploads/_jhk43543h5h435k3453 (session id folder for user 1)

temp_uploads/_jhk43543h5h435k34tr (session id folder for user 2)

temp_uploads/_jhk43543h5h43trtrtg (session id folder for user 3)

you just need store session id for each user, which you maybe you are already doing.

happy Coding :)