How to work with JSON interface?

Question

PHP

If you type
speller.yandex.net/services/spellservice.json/chec...
in the address bar, you get the answer
[{"code":1,"pos":0,"row":0,"col":0," len":6,"word":"malavi","s":["Malawi"]}]
How to get the value "Malawi" into some variable inside php
, the answer can be like this
[]
Well, there are no errors. How to use such an answer to understand that there is no error?

Answer 1

I have already answered about XML, I will also answer about JSON. You need json_decode function