Probleme requete date

$heure = date("H:i:s");

$recupip = mysql_query("SELECT * FROM connectes");
while($data =  mysql_fetch_assoc($recupip)){

	$daterec = $data['timestamp'];
	
	if ($daterec == $heure + 600)
	{
	$delete = mysql_query("DELETE FROM connectes WHERE timestamp  >= $heure +600")

	}
}

<?
	$SQL = new MySQL;
	$SQL->Connect($sql_login,$sql_password,$sql_host,$sql_db);
		
	$SQL->Query("SELECT * FROM blog_Infos WHERE ID=1");
	$donnees = mysql_fetch_array($SQL->QueryRep);
	$Viewpages = $donnees['Viewpages'] + 1;
	$Version = $donnees['Version'];
	$Visites = $donnees['Visites'];
	$DayVisites = $donnees['DayVisites'];
	$IP = $HTTP_SERVER_VARS["REMOTE_ADDR"];
	$SQL->Disconnect();
	
	function UpdateViewPages($Pages) {
		include('./modules/config.php');
		$SQLU = new MySQL;
		$SQLU->Connect($sql_login,$sql_password,$sql_host,$sql_db);
		$SQLU->Query("UPDATE blog_Infos SET Viewpages=".$Pages." WHERE ID=1");
		$SQLU->Disconnect();
	}
	
	function VerifIP($IP) {
		include('./modules/config.php');
		$SQLU = new MySQL;
		$SQLU->Connect($sql_login,$sql_password,$sql_host,$sql_db);
		$SQLU->Query("SELECT * FROM infos_IP WHERE IP='".$IP."'");
		$SQLU->Disconnect();
		
		if (mysql_num_rows($SQLU->QueryRep) == 0) {
			return 0;
		}
		else {
			return 1;
		}
	}
	
	function UpdateVisites($Visites, $DayVisites,$IP) {
		include('./modules/config.php');
		
		$SQLU = new MySQL;
		$SQLU->Connect($sql_login,$sql_password,$sql_host,$sql_db);
		
		//On check la date pour le compteur de visite journalière
		$SQLU->Query("SELECT * FROM blog_Infos WHERE ID=1");
		$donnees = mysql_fetch_array($SQLU->QueryRep);
		$Date = $donnees['Date'];
		if ($Date < date("Y-m-d")) {
			//On reset le compteur de visites journalier
			$SQLU->Query("UPDATE blog_Infos SET DayVisites=0 WHERE ID=1");
			$DayVisites = 0;
			//On met à jour la date
			$SQLU->Query("UPDATE blog_Infos SET Date=CURDATE()");
		}
		
		//On supprime toutes les IP qui ont plus de 24h
		$SQLU->Query("DELETE FROM infos_IP WHERE Date<CURDATE()");
		$SQLU->Disconnect();
		
		//Si l'ip du visiteur est pas dans la DB
		if (!VerifIP($IP)) {
			//On l'ajoute
			$SQLU = new MySQL;
			$SQLU->Connect($sql_login,$sql_password,$sql_host,$sql_db);
			$SQLU->Query("INSERT INTO infos_IP (ID,IP,Date) VALUE('','".$IP."',CURDATE())");
			
			//On incrémente le compteur
			$SQLU->Query("UPDATE blog_Infos SET Visites=".($Visites + 1)." WHERE ID=1");
			$SQLU->Query("UPDATE blog_Infos SET DayVisites=".($DayVisites + 1)." WHERE ID=1");
			$SQLU->Disconnect();
		}
	}
?>

include('./modules/Infos/Infos.h');
UpdateVisites($Visites,$DayVisites,$IP);
UpdateViewPages($Viewpages);