chamilo / chamilo-lms

     * @return bool    True if the user is a coach

     *

     */

    public static function is_session_course_coach($user_id, $courseId, $session_id)

    {

        $tbl_session_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);

        // Protect data

        $user_id = intval($user_id);

        $courseId = intval($courseId);

        $session_id = intval($session_id);

        $result = false;

        $sql = "SELECT session_id FROM $tbl_session_course_rel_user

                WHERE

                  session_id = $session_id AND

                  c_id = $courseId AND

                  user_id = $user_id AND

                  status = 2 ";

        $res = Database::query($sql);

        if (Database::num_rows($res) > 0) {

            $result = true;

        }

        return $result;

    }

    /**

     * This function returns an icon path that represents the favicon of the website of which the url given.

 * @param int $ref

 * @return array|resource

 */

function api_get_track_item_property_history($tool, $ref)

{

    $tbl_stats_item_property = Database::get_main_table(TABLE_STATISTIC_TRACK_E_ITEM_PROPERTY);

    $course_id = api_get_course_int_id(); //numeric

    $course_code = api_get_course_id(); //alphanumeric

    $item_property_id = api_get_item_property_id($course_code, $tool, $ref);

    $sql = "SELECT * FROM $tbl_stats_item_property

            WHERE item_property_id = $item_property_id AND course_id = $course_id

            ORDER BY lastedit_date DESC";

    $result = Database::query($sql);

    if ($result == false) {

        $result = array();

    } else {

        $result = Database::store_result($result,'ASSOC');

    }

    return $result;

}

/**

 * Gets item property data from tool of a course id