php - How can I Configure localhost and remote server with single config file -

i'm using different configuration files in localhost , remote server. makes me uncomfortable because every time need change server name, password , db name.
other have single config method connect both localhost , remote server?

this config file:

<?php     $servername = "localhost";     $username = "username";     $password = "password";     $dbname = "mydb";      // create connection     $conn = new mysqli($servername, $username, $password, $dbname);      // check connection     if ($conn->connect_error) {        die("connection failed: " . $conn->connect_error);     }      $conn->close(); ?>  

you need check host run time.

the following code check host whenever file runs.

and depending upon host, use different credentials.

<?php $host = $_server['http_host']; if ($host == 'localhost') {     $servername = "localhost";     $username = "username";     $password = "password";     $dbname = "mydb"; } else {     $servername = "remote_host";     $username = "remote_username";     $password = "remote_password";     $dbname = "remote_db"; }  // create connection $conn = new mysqli($servername, $username, $password, $dbname); // check connection if ($conn->connect_error) {  die("connection failed: " . $conn->connect_error); } $conn->close(); ?>