我正在接受：
致命错误：在第137行的/home/nbaxy/public_html/application/core/MY_Controller.php中调用非对象上的成员函数num_rows（）
MY_Controller.php：
<?php
class MY_Controller extends CI_Controller
{
private $dblabg = array();
public function __construct()
{
parent::__construct();
if($this->config->item("use_database") == 1)
{
$this->load->database();
$this->load->model("dashboard/admin");
$this->set_config();
if($this->config->item("module_user_online") == 1 )
{
$this->set_online();
}
}
$this->set_lang();
$this->clean_cache();
if($this->router->fetch_module() == 'dashboard')
{
$this->__dashboard();
}
}
protected function set_lang()
{
if($this->config->item("user_change_lang") == "1")
{
if($this->input->get("lang"))
{
if(in_array($this->input->get("lang"),$this->config->item("langs_available")) || $this->config->item("use_db_language") == '1')
{
$this->config->set_item("lang",$this->input->get("lang"));
$this->session->set_userdata('lang', $this->input->get("lang"));
}
}
else
{
if($this->session->userdata('lang') != '')
{
$this->config->set_item("lang",$this->session->userdata('lang'));
}
else
{
if($this->config->item("language_browser") == '1' )
{
$lang = substr($_SERVER['HTTP_ACCEPT_LANGUAGE'], 0, 2);
$temp = $this->admin->getTable('languages',array("iso" => $lang));
if($temp->num_rows()>0 && $this->config->item("language_browser") == '1' && $this->router->fetch_module() != 'dashboard')
{
$d = $temp->row();
$this->config->set_item("lang",$d->language);
}
}
}
}
}
if($this->config->item("use_db_language") == '1')
{
$this->load_db_language($this->config->item("lang"));
}
else
$this->lang->load($this->config->item("lang"),$this->config->item("lang"));
}
public function load_db_language($lang = 'english')
{
$this->db->select ('*');
$this->db->from ('language');
$this->db->where ('language', $lang);
$query = $this->db->get()->result();
foreach ( $query as $row )
{
$return[$row->key] = $row->text;
}
$this->dblabg = $return;
$this->db->select ('*');
$this->db->from ('languages');
$query = $this->db->get()->result();
$return = array();
foreach ( $query as $row )
{
$return[$row->language] = $row->language;
}
$this->config->set_item("langs_available", $return);
unset($query,$return);
}
public function get_label($key)
{
return $this->dblabg[$key];
}
protected function clean_cache()
{
if(exec('echo EXEC') == 'EXEC')
{
if($this->config->item("clean_cache") != '0')
{
exec("find ".getcwd()." -type f -name '*.cache' -mtime +".$this->config->item("clean_cache")." -exec rm {} \;");
}
}
}
protected function set_online()
{
$this->admin->setUsuarioOnline(intval($this->session->userdata('id')));
}
protected function set_config()
{
$config = $this->admin->getTable("settings");
if($config->num_rows() == 0)
{
show_error("No settings founds in your database, you need install this script on clean database",400);
}
foreach ($config->result_array() as $row)
{
if($row['var'] != 'use_database')
{
if($row['var'] == 'langs_available')
{
$this->load->helper('directory');
$langs = directory_map('./application/language');
foreach ($langs as $key => $value) {
$temp[] = $key;
}
$row['value'] = $temp;
}
if($row['var'] == 'theme')
{
if($_GET['skin'])
{
$row['value'] = $_GET['skin'];
}
}
if(!is_array($row['value']))
{
//$row['value'] = str_ireplace('"', "'",$row['value']);
$row['value'] = str_ireplace('\"', '"',$row['value']);
$row['value'] = str_ireplace("\'", "'",$row['value']);
$row['value'] = html_entity_decode($row['value']);
}
$this->config->set_item($row['var'], $row['value']);
if($this->agent->is_mobile())
{
$this->config->set_item("theme", $this->config->item("theme_mobile"));
}
}
}
if($this->agent->is_mobile())
{
if($this->config->item("mobile_redirect") != '')
redirect($this->config->item("mobile_redirect"), 'location', 301);
}
if(is_logged())
{
$this->config->set_item("biography_lang_temp",$this->config->item("biography_lang"));
$this->config->set_item("biography_lang", $this->session->userdata('biography_lang'));
}
$config = Array(
'protocol' => 'smtp',
'smtp_host' => $this->config->item("smtp_host"),
'smtp_port' => $this->config->item("smtp_port"),
'smtp_user' => $this->config->item("smtp_user"), // change it to yours
'smtp_pass' => $this->config->item("smtp_pass"), // change it to yours
'mailtype' => 'html',
'charset' => 'utf-8',
'wordwrap' => TRUE
);
$this->load->library('email',$config);
}
protected function __dashboard()
{
if($this->config->item("use_database") == 0)
{
show_404();
}
if(!is_logged() && $this->router->method != 'login' && $this->router->method != 'logout' )
{
redirect(base_url()."dashboard/login");
}
if($this->session->userdata('is_admin') != 1 && $this->router->method != 'login')
{
//redirect(base_url(),"refresh");
redirect(base_url()."dashboard/login");
}
else{
if($this->session->userdata('username') == 'demo@jodacame.com' && $this->router->method != 'login')
{
if($this->router->method == 'website')
{
$this->config->set_item("lastfm", 'lastfmdemomodeapikey');
}
if($_POST || $this->router->method == 'smtp' || $this->router->method == 'license' || $this->router->method =='users' || $this->router->method =='lyrics' || $this->router->method == 'newsletter' )
{
show_error("Demo Account don't have permission for this action",403);
}
}
// Upgrade
if(file_exists("upgrade/upgrade.sql"))
{
$MD5 = md5_file("upgrade/upgrade.sql");
if($this->config->item("md5updated") != $MD5)
{
$sql = file_get_contents("upgrade/upgrade.sql");
$sqls = explode(";\n",$sql);
foreach ($sqls as $key => $value) {
if($value != '')
{
$this->db->query($value);
//echo $this->db->last_query()."<br>";
}
}
$this->db->query("UPDATE settings SET value = '$MD5' WHERE var='md5updated';");
$this->session->sess_destroy();
//echo $this->db->last_query()."<br>";
redirect(base_url()."dashboard/login/1");
}
}
if(file_exists("install.sql"))
{
$sql = file_get_contents("install.sql");
$sqls = explode(";\n",$sql);
foreach ($sqls as $key => $value) {
if($value != '')
{
$this->db->query($value);
//echo $this->db->last_query()."<br>";
}
}
unlink("install.sql");
redirect(base_url()."dashboard/login/2");
}
// Check install modules
}
}
}
请告诉我，我该如何解决这个问题？
答案 0 :(得分：0)
问题是你在打电话＆＃34; $ temp-＆gt; num_rows（）＆＃34;您的Variable $ temp不是数据库查询的结果集。您正在调用一种不存在的方法。您似乎正在尝试获取表格＆＃39;语言中的数据行数。在这种情况下，您需要执行$ SQL查询。
Example:
// this assumes $mysqli is a successfull connection to the table 'languages'
$query = "SELECT COUNT(id) FROM `languages`";
if ($result = $mysqli->query($query)) {
$row_cnt = $result->num_rows; //$row_cnt now equals an integer.
}
*注意：你需要用if（$ row_cnt＆gt; 0 ...）替换$ temp-＆gt; numrows