Display json api response in php

Hello there, We have a php page where we display information depending on the search input provided by the users. We post the information gathered from the search result to a database using php session call. This is a connection with a api which uses json format. We have already integrated most part of it and need some help with the remaining part... It won't take much time if you are expert on this field, but apart from that we will need more works on other project deals with that kind of api. Thanks.