<?php
    class Database{
        public static $connection;

        private static $dbtype = "mysql";
        private static $dbname = "crud_php";
        private static $host = "localhost";
        private static $user = "root";
        private static $pass = "";

        public function getconnection(){
            if(!self::$connection){
                self::$connection = new PDO("$dbase:db_name=$dbname;host=$host", $user, $pass);
            }
            return self::$connection;
        }

    }

?>