application/libraries/Singleton_db.php

   1 <?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
   2
   3 /**
   4  * Library Singleton_db implements a factory that retrieves a single instance
   5  * of a Database object for the whole CodeIgniter application.
   6  *
   7  * This avoids opening multiple connections to the same database and ensures
   8  * that you obtain a Database object only when you need it.
   9  *
  10  * @category    Controller
  11  * @author              Călin-Andrei Burloiu
  12  */
  13 class Singleton_db {
  14
  15         private static $db;
  16
  17         function __construct()
  18         {
  19         }
  20
  21         public static function connect()
  22         {
  23                 if(!isset(self::$db))
  24                 {
  25                         $CI = & get_instance();
  26
  27                         self::$db = $CI->load->database('default', TRUE);
  28                 }
  29
  30                 return self::$db;
  31         }
  32 }
  33
  34 /* End of file Singleton_db.php */
  35 /* Location: ./application/libraries/Singleton_db.php */