PHP MySQL Tutorial: Simple MySQL Config Class

config.php

<?php
 class Config {
  // Config variables
  public $_host = "host"; // eg. localhost
  public $_username = "username";
  public $_password = "password";
  public $_dbname = "dbname"; // Database name
  
  // Constructor
  public function __construct(){
  }
 }
?>

index.php

<?php
 // Include config class file
 include("config.php");
 
 // Create config class
 $config = new Config();
 
 // Create connection
 $con = mysqli_connect($config->_host, $config->_username, $config->_password, $config->_dbname);
 
 // Check connection
 if (mysqli_connect_errno($con))
  die("Failed to connect to MySQL: " . mysqli_connect_error());
 
 echo "MySQL successfully connected!"
?>