$sql = "SELECT access_tool, count( access_id ) AS number_of_logins FROM dokeos_stats.track_e_access WHERE access_tool IN ('".implode("','",$tools)."') GROUP BY access_tool ";
$sql = "SELECT access_tool, count( access_id ) AS number_of_logins FROM $table WHERE access_tool IN ('".implode("','",$tools)."') GROUP BY access_tool ";
$sql = "SELECT access_tool, count( access_id ) AS number_of_logins FROM dokeos_stats.track_e_lastaccess WHERE access_tool IN ('".implode("','",$tools)."') GROUP BY access_tool ";