PHP中的$ _POST，$ _GET，$ _SESSION和$ _COOKIES是从页面到页面传递变量的唯一方法吗？

Question

The question speaks for itself, but is there any other method?

Could you kindly share them even if those are the best practices?

Answer 1

Those are the most obvious ways to input information into a page. It is possible to parse the input from the url in another way than $_GET, but why would you.

Also, you can use other methods. For instance, you could save information in a file or database and read it in the next page, although you might still need some information in a cookie or the url to identify which information to read (session id).

So, while strictly the answer to your question is 'no', I want to say 'yes', these are the methods you will commonly use.

If it's strictly about those global variables, then you've got the $_REQUEST variable, which basically collects all values from $_GET, $_POST and $_COOKIE together. And $_FILES gives information about uploaded files, which are automatically stored in a temporary location, although in essence, those files are also posted to the page. So, these globals help you making things easy regarding the most common methods to communicate with a script.

All these are for input, by the way. You cannot send information back, or to the next page, by modifying these $_SUPERGLOBALS.