Build Slim2 or Slim3 php mysql API

Build Slim2 or Slim3 php mysql API My website is work in progress however before I built it I need an API interface to mysql. The software I am using is php 5.6.21, MariaDB 10.1.13 and apache httpd/nginx. The API will have the following features coded in Slim2 or Slim3 framework ( other frameworks can be suggested but it hes to be easy to read and understand by someone with basic php knowledge - me - so I can modify it as needed ): * logging of all API calls to a logfile by having a DEBUG option ( on and off ) * JSON input and output must be supported ( if query is done through JSON you must return JSON output; if query done through regular GET/POST/DELETE, API must return regular output * input methods supported: GET ( select from DB ), PUT & POST ( update DB ) and DELETE ( delete rows from DB ) * X-API-KEY or TOKEN authentication must be supported ( keep tokens in a separate table in MySQL ) * caching optional ( not mandatory ) * must have error handling ( choose what to return e.g. 403 or 500 or 404 ) to each request * interface to mysql/mariadb will be done through a separate PDO class ( class will be provided ) - codecanyon smplpdo mysql database helper class: [login to view URL] . If you prefer your own PHP PDO class, we can discuss as I want something that is easy to understand and use. * at the end of the project all source code will be posted ( by me ) on [login to view URL] as open source software Project will be done in 2 phases: 1. API part ( 50%) 2. Mysql/mariadb integration ( 50%) I will be giving you curl examples of how the API would work, later on, however for simplicity I will paste some information here as well. I can give you mysql database structure if needed. curl [login to view URL] ( ib = API router path, test5 = user, EMAILHERE = email, US = country ) . This is a GET request ( just an example ) however in the API please make this a POST curl [login to view URL] (display statically defined columns from table, not all columns) curl [login to view URL] ( search and display ITEM-2016-10000 from mysql table ) Project must be done in 1 or 2 weeks. I am very keen on security so INPUT validation is a MUST!