php - Zend_Db 的包装失败

Question

全部，

我编写了以下包装器，它扩展了 Zend_Db 类，为我的整个应用程序提供数据库连接。数据库连接工作正常，但从不同的类调用时无法执行查询。

class Testapp_DB extends Zend_Db {

        //Declare member variables.
        public $db          = null;
        public $db_host     = "";
        public $db_database = "";
        public $db_username = "";
        public $db_password = "";


 public function __construct()
        {

            //Read Database Info from Config File
            $this->db_host      = Testapp_Registry::get('config')->db->mysql->host;
            $this->db_database  = Testapp_Registry::get('config')->db->mysql->dbname;
            $this->db_username  = Testapp_Registry::get('config')->db->mysql->username;
            $this->db_password  = Testapp_Registry::get('config')->db->mysql->password;

            $db = Zend_Db::factory('Mysqli', array(
                'host'     => $this->db_host,
                'username' => $this->db_username,
                'password' => $this->db_password,
                'dbname'   => $this->db_database
            ));

            $db->getConnection(); //Works fine
            $this->db = $db;
 }
}

尝试在包含 Testapp_DB 的 PHP 文件中执行查询 - 失败..

<?php

 $db = new Testapp_DB();
 print_r($db);  //I can see the DB object here
 $sql = 'SELECT * FROM tb_Log';
 $result = $db->fetchAll($sql, 2); //This method fails.. Don't know why. Any ideas?
 print_r($result);
?>

有人可以解释一下为什么 fetchAll 方法失败吗？

谢谢

Answer 1

*Zend_Db* 除了 factory() 之外没有任何方法。

我真的不明白，你想用这种方式解决什么问题，但据我所知，你需要这样调用query()

$db->db->query();