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mateuspontes / gist:809397

Created February 3, 2011 12:04 — forked from anonymous/gist:807708

Db PDO #php

	<?php
	final class Db extends PDO {

	public static $_instance = NULL;

	public static function getInstance() {

	if (NULL === self::$_instance) {
	self::$_instance = new self();
	}