php - Connect Android to MySQL -

So I'm really new to it, I work with HTML5 with the webview class to work on HTML5 new project code in android studio I have created a database with phpmyadmin and I have created a search engine php to get data from the database. My project is actually about adding Android apps to the database, which has a list of products like Catalog, in the end it should be able to get each record individually and allow user feedback. With all I have found at that point that I do not know how can I connect Android application with the database using all PHP codes which I had created as the first searcher (with modifications or something else) . As I said, I am new to all this, so I do not know that using Webview to bring a search application built with PHP can be considered right in the Android application project, the key factor in the school project issue.

Edit * Now I have this:

   $ isbn, 'titol' = & gt; $ titol, 'autor' => $ autor, 'any' = & Gt; $ any, 'descripcio' = & gt; $ descripcio, 'format' = & gt; $ format); } // DebonicTamos La Base Day Data $ close = mysqli_close ($ inclusion) or die ("Hysteistida and unbidden and la destion de la bas de data"); $ Json_string = json_encode ($ registres); Echo $ json_string; ? & Gt;  

But the system gives the following:

Notice: Undefined index: In Input: \ xampp \ htdocs \ json4 \ api \ api3.php line 13

You can run PHP code in WebView. But you can use HTML5 and Javascript to connect to the database,

1. First you need to create an API, search for it. Create a page called FOPY and host your server like . Www.yourdomain.com/search.php
2. Now to connect the database and get results from mysql, there is search.php code, keep them in array and finally JSON as output.

Search.php

  & lt ;? Php $ con = mysql_connect (host, user, pass); $ Input = $ _ request ['input']; $ Sql ​​= "Select * From the table where the field =". $ Input; // change table and field $ result = mysql_query ($ sql, $ con); $ Rows = array (); While ($ line = mysql_fetch_array ($ result)) {$ rows [=] $ line; } Echo json_encode ($ rows); // It results in the form of JSON? & Gt;  

// Now your Android application can use AJAX calls using Javascript to request URL, use JQUERY mobile for easy AJAX calls www.yourdomain.com /search.php?input=some + text

and AJAX calls returns JSON data that can be parsed and displayed in the webview.