Choosing to submit data from json or form-data forms?

Question

PHP

The question arose for processing data on the server:
if you accept $_POST $_GET parameters from forms or js handlers in json format, what could be the consequences?
how will json_decode react if they send all kinds of horror (not in json format)?
Frontend I want to change to Angular and backend to leave php

json_decode(file_get_contents('php://input')) // Получение json

Answer 1

if you accept $_POST $_GET parameters from forms or js handlers in json format, what could be the consequences?

If you do not screw up with the code, then none.

how will json_decode react if they send all kinds of horror (not in json format)?

Documentation .