include 'dishedhou.sql';//dishedhou.sql当前目录下的sql文件
function insert($file,$database,$name,$root,$pwd){
    //将表导入数据库
    $_sql = file_get_contents($file);//自己的.sql文件
    $_arr = explode(';', $_sql);
    $_mysqli = new mysqli($name,$root,$pwd,$database);
    if (mysqli_connect_errno()) {
        exit('连接数据库出错');
    } else{
        //执行sql语句
        $_mysqli->query('set names utf8;'); //设置编码方式
        foreach ($_arr as $_value) {
            $_mysqli->query($_value.';');
        }
        echo "插入成功";
    }
    $_mysqli->close();
    $_mysqli = null;
}

insert("dishedhou.sql",'dishedhou',"localhost","root","root");

谢谢