need to create json api with using php

PHP - Mysql - JSON Api Feed post api Post title Post id Post link Post type News Video image Post short description Post feature image or video Its depend on post type ex if news : feature image url if video : youtube video id If image : full size image url Post date Post estimate read time Post publisher Post action Like Share Cmt Post language Post category Post related id Related parent - 0 or 1 Post related api Post id Post count Cmt api ?postid=1 Cmt count Cmt list Cmt time Insert cmt api type post Cmt content Cmt time Person ip address Post id Publisher api Name Logo Category api Name Publisher id Feed url for cron job Setting Ads manage - how much feeds after show ads Flash splash screen image format gif App version PHP Admin Panel ( Just need simply ) Category add Category Name Publisher select Feed add Feed for cron job Feed url Select Category Select Publisher Post List Bulk Action Approve Trash Related Content Priority select one content after bulk action with related content Post Quick edit on same page ( if not edited use old title , image , short dscriopt) Title Feature image Short description Publisher add Laguage Publisher Name Logo Setting When ads show how much feed after show Post creation Post title Post description Category Feature image Post type Vidoe Image news Post link Post video Advertisement Creation Post id How much feeds after show ads Need to create a simple admin panel for controlling app - 7 page Need to create Json api for an our android app. - 7 api Need to do cron job - rss feed to insert data in mysql database