Filter the data loaded from Server(PHP MySQL or JSON file) in respond to user input and show them on autocomplete view as search suggestions.
PHP
Connect Android to localhost: Test Android with PHP MySQL using WAMP
If you are using WAMP server to test your PHP files locally, Android localhost connection and testing PHP in your mobile phone is easy.
Android Pull to Refresh RecyclerView with JSON PHP
Pull down to fetch fresh data from PHP or JSON file into RecyclerView using Android Swipe Refresh Layout and AsyncTask.
Android AsyncTask to fetch PHP file without using any library
Tutorial is on, retrieving PHP file without using any library like volley or retrofit. Android AsyncTask and HttpURLConnection class is used.
Android Search View with PHP and MySQL
This tutorial demonstrates how to deal with search view in android using PHP as server side scripting language and MySQL as backend.