diff --git a/include/functions.php b/include/functions.php
index fd6fa57..aff1092 100644
--- a/include/functions.php
+++ b/include/functions.php
@@ -1,72 +1,94 @@
 <?php
 # boz-mw - Another MediaWiki API framework
 # Copyright (C) 2019, 2020, 2021 Valerio Bozzolan
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License as published by
 # the Free Software Foundation, either version 3 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 Affero General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 
 /**
  * Shortcuts very useful when you are creating a bot
  */
 
 /**
  * Get a single wiki from its UID
  *
  * Some known UIDs:
  *  wikidatawiki - Wikidata
  *  commonswiki  - Wikimedia Commons
  *  metawiki     - Meta-wiki
  *  itwiki       - Wikipedia (it)
  *
  * @param string $uid
  * @return mw\StaticSite
  */
 function wiki( $uid ) {
 	return \web\MediaWikis::findFromUID( $uid );
 }
 
 /**
  * Get Wikidata
  *
  * @return wm\Wikidata
  */
 function wikidata() {
 	return wiki( 'wikidatawiki' );
 }
 
 /**
  * Get Wikimedia Commons
  *
  * @return wm\Wikidata
  */
 function commons() {
 	return wiki( 'commonswiki' );
 }
 
 /**
  * Get the Italian Wikipedia
  *
  * @return wm\WikipediaIt
  */
 function itwiki() {
 	return wiki( 'itwiki' );
 }
 
 /**
  * Enable debug mode
  *
  * @param $status status Enable debug or not
  */
 function bozmw_debug( $status = true ) {
 	\cli\Log::$DEBUG = $status;
 }
+
+/**
+ * Serialize some data and write into a file
+ *
+ * @param $file string File path
+ * @param $data mixed Your data
+ */
+function file_put_data( $file, $data ) {
+	$data_raw = serialize( $data );
+	file_put_contents( $file, $data_raw );
+}
+
+/**
+ * Unserialize some data from a file
+ *
+ * @param $file string File path
+ * @return mixed Data
+ */
+function file_get_data( $file ) {
+	$contents = file_get_contents( $file );
+	return unserialize( $contents );
+}