Wrapper to Zend_Db is failing

All,

I wrote the following wrapper that extends Zend_Db class to provide db connectivity to my entire application. The db connectivity works fine, but it fails to execute queries when invoked from a different class.

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,
         开发者_运维知识库       'dbname'   => $this->db_database
            ));

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

Trying to execute query in a PHP file that includes Testapp_DB - fails..

<?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);
?>

Can someone please explain, why the fetchAll method fails?

Thanks

*Zend_Db* doesnt have any method other than factory().

I dont really get, what you are trying to solve this way, but as far as I can see you need to call query() this way

$db->db->query();

Perhaps instead of using your wrapper, try this:

// Note: change your config to have a 'params' entry
$db = Zend_Db::factory(Testapp_Registry::get('config')->db->mysql);
Zend_Db_Table_Abstract::setDefaultAdapter($db);
Zend_Registry::set('database', $db);

// in your config
...mysql.params.host = ...
...mysql.params.dbname = ...
...mysql.params.username = ...
...mysql.params.password = ...

Then, your Zend_Db_Table objects will have connectivity, and in addition you can grab the connection using Zend_Registry::get('database'). And, you'll make only one database connection once per request.

Try to create a SQL file like schema.mysql.sql, then test it on phpMyAdmin and when it's free of bugs run this code:

$bootstrap = $application->getBootstrap();
$bootstrap->bootstrap(‘db’);
$config = $bootstrap->getResource(‘db’)->getConfig();
$runCommand = “mysql -h “.$config["host"].” -P “.$config["port"].” -u’”.$config["username"].”‘ -p’”.$config["password"].”‘ “.$config["dbname"].” < “.dirname(__FILE__) . ‘/schema.mysql.sql’;
echo $runCommand;
system($runCommand);

Hope this helps! http://www.unexpectedit.com/zend-php/zend-db-exec-a-sql-file