public function __construct()
{
$this->pdo = DatabasePDO::getInstance();
}
private static function initializeConnection()
{
if (is_null(self::$dbConn)) {
self::$dbConn = DatabasePDO::getInstance();
}
}
` <?php
$pcdSearch = DatabasePDO::getInstance();
$pcdSearch->search();
class DatabasePDO
{
private static $dbh = null;
protected $pdoDB;
/*
__construct()
Set to private so that no one can create objects using new
*/
private function __construct()
{
try {
$this->pdoDB = new PDO("mysql:host=", '', '');
$this->pdoDB->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
} catch (PDOException $pe) {
die('Connection error: ' . $pe->getMessage());
}
}
public static function getInstance()
{
if (!self::$dbh) {
self::$dbh = new DatabasePDO();
}
return self::$dbh;
}
/*
Like the constructor, we make __clone private
so nobody can clone the instance
*/
