diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index e0dcc51917b..443a757b512 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -65,6 +65,30 @@ function getDolGlobalInt($key)
 	return (int) (empty($conf->global->$key) ? 0 : $conf->global->$key);
 }
 
+/**
+ * Return dolibarr global constant string value
+ * @param string $key key to return value, return '' if not set
+ * @return string
+ */
+function getDolGlobalString($key)
+{
+	global $conf;
+	// return $conf->global->$key ?? '';
+	return (string) (empty($conf->global->$key) ? '' : $conf->global->$key);
+}
+
+/**
+ * Return dolibarr global constant int value
+ * @param string $key key to return value, return 0 if not set
+ * @return int
+ */
+function getDolGlobalInt($key)
+{
+	global $conf;
+	// return $conf->global->$key ?? 0;
+	return (int) (empty($conf->global->$key) ? 0 : $conf->global->$key);
+}
+
 /**
  * Return a DoliDB instance (database handler).
  *