zoneminder/web/includes/actions/zones.php

<?php
//
// ZoneMinder web action file
// Copyright (C) 2019 ZoneMinder LLC
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
require_once('includes/Zone.php');
global $error_message;

$monitors_to_restart = array();

if ( $action == 'delete' ) {
  if ( isset($_REQUEST['markZids']) ) {
    foreach ( $_REQUEST['markZids'] as $markZid ) {
      $zone = new ZM\Zone($markZid);
      if ( ! $zone->Id() ) {
        $error_message .= 'Zone not found for id ' . $markZid.'<br/>';
        continue;
      }
      $monitor = $zone->Monitor();
      if ( !$monitor->CanEdit() ) {
        $error_message .= 'You do not have permission to edit zones for monitor ' . $monitor->Name().'.<br/>';
        continue;
      }
      # Could use true but store the object instead for easy access later
      $monitors_to_restart[$monitor->Id()] = $monitor;
      $error_message .= $zone->delete();
    } # end foreach Zone

    foreach ( $monitors_to_restart as $mid => $monitor ) {
      if ( daemonCheck() and ($monitor->Type() != 'WebSite') ) {
        zmcControl($mid, 'restart');
      } // end if daemonCheck()
    }
    $refreshParent = true;
  } // end if isset($_REQUEST['markZids'])
} // end if action 

?>