Delete orphaned files

com.woltlab.wcf/cronjob.xml

@@ -35,6 +35,12 @@
 			<description language="de">Löscht verwaiste Dateianhänge</description>
 			<expression>0 2 * * *</expression>
 		</cronjob>
+		<cronjob name="com.woltlab.wcf.fileCleanUp">
+			<classname>wcf\system\cronjob\FileCleanUpCronjob</classname>
+			<description>Deletes orphaned files</description>
+			<description language="de">Löscht verwaiste Dateien</description>
+			<expression>0 3 * * *</expression>
+		</cronjob>
 		<cronjob name="com.woltlab.wcf.backgroundQueueCleanUp">
 			<classname>wcf\system\cronjob\BackgroundQueueCleanUpCronjob</classname>
 			<description>Requeues stuck queue items</description>

wcfsetup/install/files/lib/system/cronjob/FileCleanUpCronjob.class.php

@@ -0,0 +1,37 @@
+<?php
+
+namespace wcf\system\cronjob;
+
+use wcf\data\cronjob\Cronjob;
+use wcf\data\file\FileEditor;
+use wcf\system\WCF;
+
+/**
+ * Deletes orphaned files.
+ *
+ * @author Alexander Ebert
+ * @copyright 2001-2024 WoltLab GmbH
+ * @license GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
+ * @since 6.1
+ */
+class FileCleanUpCronjob extends AbstractCronjob
+{
+    #[\Override]
+    public function execute(Cronjob $cronjob)
+    {
+        parent::execute($cronjob);
+
+        $sql = "SELECT  fileID
+                FROM    wcf1_file
+                WHERE   objectTypeID IS NULL";
+        $statement = WCF::getDB()->prepare($sql, 1_000);
+        $statement->execute();
+        $fileIDs = $statement->fetchAll(\PDO::FETCH_COLUMN);
+
+        if ($fileIDs === []) {
+            return;
+        }
+
+        FileEditor::deleteAll($fileIDs);
+    }
+}