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My php code for connecting android application to phpMyAdmin database is not working

I am working on the project in which i am supposed to connect my android application to phpMyAdmin database but there is some problem. As I run the code, same code appears on the browser.

I am doing everyting else correctly like connections etc.

Here is my code, someone please explain what is the problem

CODE: '

/**  * A class file to connect to database  */ class DB_CONNECT {

    // constructor
    function __construct() {
        // connecting to database
        $this->connect();
    }

    // destructor
    function __destruct() {
        // closing db connection
        $this->close();
    }

    /**
     * Function to connect with database
     */
    function connect() {
        // import database connection variables
        require_once __DIR__ . '/db_config.php';

        // Connecting to mysql database
        $con = mysql_connect(DB_SERVER, DB_USER, DB_PASSWORD) or die(mysql_error());

        // Selecing database
        $db = mysql_select_db(DB_DATABASE) or die(mysql_error()) or die(mysql_error());

        // returing connection cursor
        return $con;
    }

    /**
     * Function to close db connection
     */
    function close() {
        // closing db connection
        mysql_close();
    }

}

?>'

您应该将<?php放在文件的开头

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