mysqli php问题 [英] mysqli php problem

问题描述

我是新的mysqli所以..我怎么能得到这个工作？

I'm new to mysqli so.. how can i get this to work?

class Database {

    public $mysqli;

    public function connect() {
        $this->mysqli = new mysqli('localhost', 'root', '', 'hltv');
    }

    public function sqlQuery() {
        if($rows = $this->mysqli->query("SELECT * FROM users")) {
            echo $rows->numRows();
        }
    }


}

说，致命错误：调用未定义的方法mysqli_result :: numRows（）在C：\xampp\htdocs\hltv_new\includes\database\config.php第18行

says, Fatal error: Call to undefined method mysqli_result::numRows() in C:\xampp\htdocs\hltv_new\includes\database\config.php on line 18

推荐答案

没有方法numRows，因此您不能调用它。

There is no method numRows, so you can't call it.

echo $rows->num_rows;

http://www.php.net/manual/en/mysqli-result.num-rows.php

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