Hello,
I am trying to create a singleton database class that wraps up the
creation of the PDO class. However, when I call the getInstance()
method and run it through the gettype() method (for testing purposes) it
returns 'object' but when I try to create a statement object I recieve a
Fatal error: Call to undefined method WebDBConn::setAttribute()...
Here is my class:
/**
* Class WebDBConn (Singleton Pattern)
* This class ensures only one instance of a database
* connection is used throughout application
*/
class WebDBConn {
/**
* DB Instance
* @var object
* @access private
*/
private static $instance = NULL;
/**
* WebDBConn Constructor
* @return void
* @access private
*/
private function __construct() {
self::$instance = new PDO($db, $user, $pwd);
self::$instance->setAttribute(PDO::ATTR_ERRMODE,
PDO::ERRMODE_EXCEPTION);
}
/**
* Return DB instance or facilitate intitial connection
* @return object
* @access public
*/
public static function getInstance() {
if (!self::$instance) {
self::$instance = new WebDBConn;
}
return self::$instance;
}
}
Here is the code within my application:
$db = WebDBConn::getInstance();
$db->prepare($sql); (Fatal Error occurs right here -
WebDBConn::prepare() undefined method)
Shouldn't $db be an instance of PDO???
Any help would be greatly appreciated.
Ken Vandegrift
