<?php
	class MySQL implements DB {
		public function __construct($host, $user, $pass, $db){
			mysql_connect($host, $user, $pass);
			mysql_select_db($db);
		}

		public function execute($sql){
			$exec = mysql_query($sql);
			if(FALSE === $exec){
				throw new Exception(mysql_error());
			}
			return array('sql' => $exec, 'indice' => 0, 'nb_ligne' => mysql_num_rows($exec));
		}

		public function num_rows($sql){
			return $sql['nb_ligne'];
		}

		public function next_row($sql){
			$result = mysql_fetch_object($sql['sql']);
			return $result;
		}
	}