<?php
require_once 'Configuration.php';

abstract class Modelecentral
{
    private static $bdd;
	
    protected function executerRequete($sql, $params = null)
    {
        if ($params == null) {
            $resultat = self::getBdd()->query($sql);   // exécution directe
        }
        else {
            $resultat = self::getBdd()->prepare($sql); // requête préparée
            $resultat->execute($params);
        }
        return $resultat;
    }
    private static function getBdd()
    {
        if (self::$bdd === null) {
            $dsn = Configuration::get("dsncentral");
            $login = Configuration::get("logincentral");
            $mdp = Configuration::get("mdpcentral");
            self::$bdd = new PDO
			(
					$dsn, 
					$login, 
					$mdp,
                    array
					(
						PDO::ATTR_ERRMODE 					=> PDO::ERRMODE_EXCEPTION,
						PDO::MYSQL_ATTR_USE_BUFFERED_QUERY 	=> true
					)
			);
			
			// $pdo->setAttribute(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY, false);
        }
        return self::$bdd;
    }

    protected function dernierId()
    {
        return self::getBdd()->lastInsertId();
    }
}