examle for using the files as database and input with juping and autosendeng
this example shows how you can use a json encoded array file as a user database. implemented registration and authorization of users with the preservation of authorization data in the session on pure and simple php. after authorization, you can enter your personal account. role separation and control is not implemented. there is also a form of entering a phone number in which as you enter the numbers you go to the next field, and when you delete the return to the previous one on pure js. after the end of dialing the form is sent to the specified processing from which it receives a return response and displays it to the visitor as AJAX. it is possible to combine functions with minor modifications.