PHP file upload

We often encounter many situations like this in our daily use:

1. Upload pictures in QQ space
2. Upload pictures in WeChat Moments
3. Upload email data attachments when sending emails
4. Required to upload photos or ID cards when authenticating

There are also various needs put forward by gou (gou) for various products to analyze. Upload different things.

We need to realize the requirements put forward by the product Wang.
Implementing file upload is one of the necessary skills for a PHP programmer.

By learning file upload, you will see the essence of file upload through the phenomenon of use!