echec de UPDATE marque SET mar_lib=Oertli2, mar_web=http://www.oertli.com, mar_img=http://localhost/Dcp/Administration/marques/oertli2.gif WHERE mar_id=3

$sql2 = 'UPDATE marque SET mar_lib='.$Mlib.', mar_web='.$Mweb.', mar_img='.$Mimg.' WHERE mar_id='.$id;
		$res = mysql_query($sql2, $cnx) or die ("echec de $sql2");

$sql2 = "UPDATE marque SET mar_lib='".$Mlib."', mar_web='".$Mweb."', mar_img='".$Mimg."' WHERE mar_id=".$id; 
        $res = mysql_query($sql2, $cnx) or die ("echec de $sql2"); 

$sql2 = "UPDATE marque SET mar_lib='".$Mlib."', mar_web='".$Mweb."', mar_img='".$Mimg."' WHERE mar_id=".$id;