Prefer require_once in non-entry-points

classes/autoenable.class.php

 
         if ($Status != self::DISCARDED) {
             // Prepare email
-            require(SERVER_ROOT . '/classes/templates.class.php');
+            require_once(SERVER_ROOT . '/classes/templates.class.php');
             $TPL = NEW TEMPLATE;
             if ($Status == self::APPROVED) {
                 $TPL->open(SERVER_ROOT . '/templates/enable_request_accepted.tpl');

classes/users.class.php

         ResetKey = '" . db_string($ResetKey) . "',
         ResetExpires = '" . time_plus(60 * 60) . "'
       WHERE UserID = '$UserID'");
-    require(SERVER_ROOT . '/classes/templates.class.php');
+    require_once(SERVER_ROOT . '/classes/templates.class.php');
     $TPL = NEW TEMPLATE;
     $TPL->open(SERVER_ROOT . '/templates/password_reset.tpl'); // Password reset template
     $TPL->set('Username', $Username);
   public static function auth_location($UserID, $Username, $ASN, $Email) {
     $AuthKey = Users::make_secret();
     G::$Cache->cache_value('new_location_'.$AuthKey, ['UserID'=>$UserID, 'ASN'=>$ASN], 3600*2);
-    require(SERVER_ROOT . '/classes/templates.class.php');
+    require_once(SERVER_ROOT . '/classes/templates.class.php');
     $TPL = NEW TEMPLATE;
     $TPL->open(SERVER_ROOT . '/templates/new_location.tpl');
     $TPL->set('Username', $Username);

feeds.php

   unset($_GET['clearcache']);
 }
 
-require 'classes/config.php'; // The config contains all site-wide configuration information as well as memcached rules
+require_once('classes/config.php'); // The config contains all site-wide configuration information as well as memcached rules
 
-require(SERVER_ROOT.'/classes/misc.class.php'); // Require the misc class
-require(SERVER_ROOT.'/classes/cache.class.php'); // Require the caching class
-require(SERVER_ROOT.'/classes/feed.class.php'); // Require the feeds class
+require_once(SERVER_ROOT.'/classes/misc.class.php'); // Require the misc class
+require_once(SERVER_ROOT.'/classes/cache.class.php'); // Require the caching class
+require_once(SERVER_ROOT.'/classes/feed.class.php'); // Require the feeds class
 $Cache = new Cache(MEMCACHED_SERVERS); // Load the caching class
 $Feed = new FEED; // Load the time class
 

sections/feeds/index.php

 $User = (int)$_GET['user'];
 
 if (!$Enabled = $Cache->get_value("enabled_$User")) {
-  require(SERVER_ROOT.'/classes/mysql.class.php');
+  require_once(SERVER_ROOT.'/classes/mysql.class.php');
   $DB = NEW DB_MYSQL; //Load the database wrapper
   $DB->query("
     SELECT Enabled
   die();
 }
 
-require(SERVER_ROOT.'/classes/text.class.php');
+require_once(SERVER_ROOT.'/classes/text.class.php');
 $Feed->open_feed();
 switch ($_GET['feed']) {
   case 'feed_news':
     $Feed->channel('News', 'RSS feed for site news.');
     if (!$News = $Cache->get_value('news')) {
-      require(SERVER_ROOT.'/classes/mysql.class.php'); //Require the database wrapper
+      require_once(SERVER_ROOT.'/classes/mysql.class.php'); //Require the database wrapper
       $DB = NEW DB_MYSQL; //Load the database wrapper
       $DB->query("
         SELECT
   case 'feed_blog':
     $Feed->channel('Blog', 'RSS feed for site blog.');
     if (!$Blog = $Cache->get_value('blog')) {
-      require(SERVER_ROOT.'/classes/mysql.class.php'); //Require the database wrapper
+      require_once(SERVER_ROOT.'/classes/mysql.class.php'); //Require the database wrapper
       $DB = NEW DB_MYSQL; //Load the database wrapper
       $DB->query("
         SELECT
   case 'feed_changelog':
     $Feed->channel('Gazelle Change Log', 'RSS feed for Gazelle\'s changelog.');
     if (!$Changelog = $Cache->get_value('changelog')) {
-      require(SERVER_ROOT.'/classes/mysql.class.php');
-      require(SERVER_ROOT.'/classes/misc.class.php');
+      require_once(SERVER_ROOT.'/classes/mysql.class.php');
+      require_once(SERVER_ROOT.'/classes/misc.class.php');
 
       $DB = NEW DB_MYSQL;
       $DB->query("

sections/torrents/edit.php

 // most members.                                                        //
 //**********************************************************************//
 
-require(SERVER_ROOT.'/classes/torrent_form.class.php');
+require_once(SERVER_ROOT.'/classes/torrent_form.class.php');
 
 if (!is_number($_GET['id']) || !$_GET['id']) {
   error(0);

sections/torrents/takeedit.php

 enforce_login();
 authorize();
 
-require(SERVER_ROOT.'/classes/validate.class.php');
+require_once(SERVER_ROOT.'/classes/validate.class.php');
 
 $Validate = new VALIDATE;
 

sections/torrents/takemasspm.php

 
 enforce_login();
 
-require(SERVER_ROOT.'/classes/validate.class.php');
+require_once(SERVER_ROOT.'/classes/validate.class.php');
 $Validate = new VALIDATE;
 
 $TorrentID = (int)$_POST['torrentid'];

sections/upload/upload.php

   $Properties['Artists'] = $ArtistForm;
 }
 
-require(SERVER_ROOT.'/classes/torrent_form.class.php');
+require_once(SERVER_ROOT.'/classes/torrent_form.class.php');
 $TorrentForm = new TorrentForm($Properties ?? false, $Err ?? false);
 
 $GenreTags = $Cache->get_value('genre_tags');

sections/user/2fa.php

 <?
-require(SERVER_ROOT.'/classes/twofa.class.php');
-require(SERVER_ROOT.'/classes/u2f.class.php');
+require_once(SERVER_ROOT.'/classes/twofa.class.php');
+require_once(SERVER_ROOT.'/classes/u2f.class.php');
 
 $TwoFA = new TwoFactorAuth(SITE_NAME);
 $U2F = new u2f\U2F('https://'.SITE_DOMAIN);

sections/user/edit.php

 <?
-require(SERVER_ROOT.'/classes/twofa.class.php');
+require_once(SERVER_ROOT.'/classes/twofa.class.php');
 $UserID = $_REQUEST['userid'];
 if (!is_number($UserID)) {
   error(404);