The following Android Java codes are based on Android Studio 2.3. In order for Android to obtain information from a server such as the login password verification, the easiest way is to connect to a web server via PHP. Android then establishes a connection to the server through a URL or a link to a PHP script. The following shows the PHP portion of the codes. I named this file testJSON.php:
<?php
error_reporting(0);
$all...
