Tester la fermeture d'une page

function envoi_actualisation($Id)
	{
		connexion_bdd();
		$req="update identification SET actualisation=".time()." where Id='".$_SESSION['utilisateur']['Id']."'";
		$resultat=mysql_query($req);
		//print (mysql_error() . " <br />- " . $req);
		
	}
	
	function test_eject($Id)
	{
		if ($Id!=NULL)
		{
			connexion_bdd();
			$req="select ejecter from identification where Id='".$Id."'";
			$resultat=mysql_query($req);
			//print (mysql_error() . " <br />- " . $req);

			$ejecter=mysql_fetch_array($resultat);
			
			
			//echo $ejecter['ejecter'];
			if($ejecter['ejecter']==1)
			{
				session_destroy();
				$_SESSION['utilisateur']['mail']= null;
				header("Location:index.php");
			}
			
		}
	}
	
	
	
	function test_actu()
	{
		connexion_bdd();
		$req="select jeux, message, pseudo, connexion, Id, actualisation from identification";
		$resultat=mysql_query($req);
		//print (mysql_error() . " <br />- " . $req);
		
		
		while($connexion=mysql_fetch_array($resultat))
		{
			$min = time();
			$min = $min - 300;
			
			if($connexion['jeux']==0 && $connexion['message']==0 && $connexion['connexion']==1 && $connexion['actualisation'] < $min)
			{
				$req = "UPDATE identification SET connexion = 0, ejecter=1 where Id='".$connexion['Id']."'";
				$ejecter = mysql_query($req);
				//print (mysql_error() . " <br />- " . $req);
			}
			
			if(($connexion['jeux']==1 || $connexion['message']==1) && $connexion['connexion']==1)
			{
				$req = "UPDATE identification SET jeux=0, message=0 where Id='".$connexion['Id']."'";
				$ejecter = mysql_query($req);
				//print (mysql_error() . " <br />- " . $req);
			}
		}
		
	}