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请原谅我发布的未code格式化的代码。有时无法让四个空间工作。

你好。寻找有关 CodeIgniter 中 num_rows() 函数引起的此错误的一些见解。

Fatal error: Call to undefined method CI_DB_mysql_driver::num_rows() in [my controller]

它似乎以某种方式植根于此……可能：

A PHP Error was encountered
Severity: 4096

Message: Object of class CI_DB_mysql_driver could not be converted to string

Filename: database/DB_active_rec.php

Line Number: 427

第 427 行显示： $v = ' '.$this->escape($v);

并且来自函数：protected function _where($key, $value = NULL, $type = 'AND ', $escape = NULL)

我正在使用 CodeIgniter 和 IonAuth，当我调用此函数时，问题似乎来自 num_rows()： public function login($identity, $password, $remember=FALSE) { $this->trigger_events('pre_login') ;

    if (empty($identity) || empty($password))
    {
        $this->set_error('login_unsuccessful');
        return FALSE;
    }

    $this->trigger_events('extra_where');

    $query = $this->db->select($this->identity_column . ', username, email, id, password, active, last_login')
                      ->where($this->identity_column, $this->db->escape_str($identity))
                      ->limit(1);

    echo $query;

    if ($query->num_rows() === 1)
    {
        $user = $query->row();

        $password = $this->hash_password_db($user->id, $password);

        if ($password === TRUE)
        {
            if ($user->active == 0)
            {
                $this->trigger_events('post_login_unsuccessful');
                $this->set_error('login_unsuccessful_not_active');

                return FALSE;
            }

            $session_data = array(
                'identity'             => $user->{$this->identity_column},
                'username'             => $user->username,
                'email'                => $user->email,
                'user_id'              => $user->id, //everyone likes to overwrite id so we'll use user_id
                'old_last_login'       => $user->last_login
            );

            $this->update_last_login($user->id);

            $this->clear_login_attempts($identity);

            $this->session->set_userdata($session_data);

            if ($remember && $this->config->item('remember_users', 'ion_auth'))
            {
                $this->remember_user($user->id);
            }

            $this->trigger_events(array('post_login', 'post_login_successful'));
            $this->set_message('login_successful');

            return TRUE;
        }
    }

    //Hash something anyway, just to take up time
    $this->hash_password($password);

    $this->increase_login_attempts($identity);

    $this->trigger_events('post_login_unsuccessful');
    $this->set_error('login_unsuccessful');

    return FALSE;
}

我想知道他们在那里使用的查询是否有问题。CI_DB_mysql_driver 上的任何线索都会有所帮助......

提前致谢！

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2 回答 2

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Change your query code to this:

 $this->db->select($this->identity_column . ', username, email, id, password, active, last_login')
                  ->where($this->identity_column, $this->db->escape_str($identity))
                  ->limit(1);
 $query = $this->db->get('YOUR_TABLE_NAME');

The error was because you did not execute the query but you just generated the SQL code for it.

于 2013-04-12T08:44:33.690 回答
0

您已经更改了一些用于测试的内容 - 这不是来自实际来源：

    $query = $this->db->select($this->identity_column . ', username, email, id, password, active, last_login')
                  ->where($this->identity_column, $this->db->escape_str($identity))
                  ->limit(1);

echo $query;

从 github 再次拉/下载

于 2013-04-12T09:57:00.877 回答