/** * Delete a user from the platform, and all its belongings. This is a * very dangerous function that should only be accessible by * super-admins. Other roles should only be able to disable a user, * which removes access to the platform but doesn't delete anything. * @param int The ID of th user to be deleted * @return boolean true if user is succesfully deleted, false otherwise * @assert (null) === false * @assert ('abc') === false */ public static function delete_user($user_id) { if ($user_id != strval(intval($user_id))) { return false; } if ($user_id === false) { return false; } if (!self::can_delete_user($user_id)) { return false; } $user_info = api_get_user_info($user_id); $table_user = Database::get_main_table(TABLE_MAIN_USER); $usergroup_rel_user = Database::get_main_table(TABLE_USERGROUP_REL_USER); $table_course_user = Database::get_main_table(TABLE_MAIN_COURSE_USER); $table_course = Database::get_main_table(TABLE_MAIN_COURSE); $table_admin = Database::get_main_table(TABLE_MAIN_ADMIN); $table_session_user = Database::get_main_table(TABLE_MAIN_SESSION_USER); $table_session_course_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER); $table_group = Database::get_course_table(TABLE_GROUP_USER); $table_work = Database::get_course_table(TABLE_STUDENT_PUBLICATION); // Unsubscribe the user from all groups in all his courses $sql = "SELECT c.id FROM {$table_course} c, {$table_course_user} cu\n WHERE cu.user_id = '" . $user_id . "' AND relation_type<>" . COURSE_RELATION_TYPE_RRHH . " AND c.id = cu.c_id"; $res = Database::query($sql); while ($course = Database::fetch_object($res)) { $sql = "DELETE FROM {$table_group} WHERE c_id = {$course->id} AND user_id = {$user_id}"; Database::query($sql); } // Unsubscribe user from all classes //Classes are not longer supported /*$sql = "DELETE FROM $table_class_user WHERE user_id = '".$user_id."'"; Database::query($sql);*/ // Unsubscribe user from usergroup_rel_user $sql = "DELETE FROM {$usergroup_rel_user} WHERE user_id = '" . $user_id . "'"; Database::query($sql); // Unsubscribe user from all courses $sql = "DELETE FROM {$table_course_user} WHERE user_id = '" . $user_id . "'"; Database::query($sql); // Unsubscribe user from all courses in sessions $sql = "DELETE FROM {$table_session_course_user} WHERE id_user = '******'"; Database::query($sql); // Unsubscribe user from all sessions $sql = "DELETE FROM {$table_session_user} WHERE id_user = '******'"; Database::query($sql); // Delete user picture // TODO: Logic about api_get_setting('split_users_upload_directory') === 'true' , a user has 4 differnt sized photos to be deleted. if (strlen($user_info['picture_uri']) > 0) { $img_path = api_get_path(SYS_DATA_PATH) . 'upload/users/' . $user_id . '/' . $user_info['picture_uri']; if (file_exists($img_path)) { unlink($img_path); } } // Delete the personal course categories $course_cat_table = Database::get_main_table(TABLE_USER_COURSE_CATEGORY); $sql = "DELETE FROM {$course_cat_table} WHERE user_id = '" . $user_id . "'"; Database::query($sql); // Delete user from database $sql = "DELETE FROM {$table_user} WHERE user_id = '" . $user_id . "'"; Database::query($sql); // Delete user from the admin table $sql = "DELETE FROM {$table_admin} WHERE user_id = '" . $user_id . "'"; Database::query($sql); // Delete the personal agenda-items from this user $agenda_table = Database::get_main_table(TABLE_PERSONAL_AGENDA); $sql = "DELETE FROM {$agenda_table} WHERE user = '******'"; Database::query($sql); $gradebook_results_table = Database::get_main_table(TABLE_MAIN_GRADEBOOK_RESULT); $sql = 'DELETE FROM ' . $gradebook_results_table . ' WHERE user_id = ' . $user_id; Database::query($sql); $t_ufv = Database::get_main_table(TABLE_MAIN_USER_FIELD_VALUES); $sqlv = "DELETE FROM {$t_ufv} WHERE user_id = {$user_id}"; Database::query($sqlv); if (api_get_multiple_access_url()) { $url_id = api_get_current_access_url_id(); UrlManager::delete_url_rel_user($user_id, $url_id); } else { //we delete the user from the url_id =1 UrlManager::delete_url_rel_user($user_id, 1); } if (api_get_setting('allow_social_tool') == 'true') { $usergroup = new UserGroup(); //Delete user from portal groups $group_list = $usergroup->get_groups_by_user($user_id); if (!empty($group_list)) { foreach ($group_list as $group_id => $data) { $usergroup->delete_user_rel_group($user_id, $group_id); } } // Delete user from friend lists SocialManager::remove_user_rel_user($user_id, true); } survey_manager::delete_all_survey_invitations_by_user($user_id); // Delete students works $sqlw = "DELETE FROM {$table_work} WHERE user_id = {$user_id} AND c_id <> 0"; Database::query($sqlw); unset($sqlw); // Add event to system log $user_id_manager = api_get_user_id(); event_system(LOG_USER_DELETE, LOG_USER_ID, $user_id, api_get_utc_datetime(), $user_id_manager, null, $user_info); event_system(LOG_USER_DELETE, LOG_USER_OBJECT, implode(';', $user_info), api_get_utc_datetime(), $user_id_manager, null, $user_info); return true; }