MYSQLi連線字串

MySQLi 的 i 代表 Improvement ，提高了相對進階的功能，Mysqli 支援 Mysql 4.1.x 開始新增的功能。
<?php

 header("Content-type: text/html; charset=utf-8");

$mysqlhost="localhost";

$mysqluser="root";

$mysqlpasswd="123";

$mysqldb="testDB";

        $mysqli = new mysqli($mysqlhost, $mysqluser, $mysqlpasswd, $mysqldb);

        //檢查是否連線成功

        if (mysqli_connect_errno()) {

            printf("<p>抱歉，連線失敗", mysqli_connect_error());

            $this->mysqli = FALSE;

            exit();

        }

                else

                {

                          printf("<p>恭喜，連線成功！");

                }

        $mysqli->close();

        ?>