diff --git a/libs/upgradephp/upgrade.php b/libs/upgradephp/upgrade.php
index 8c29af7c3a6..a945fa8ceb7 100644
--- a/libs/upgradephp/upgrade.php
+++ b/libs/upgradephp/upgrade.php
@@ -710,4 +710,12 @@ function dump () {
 	class Error {
 
 	}
-}
\ No newline at end of file
+}
+
+if(!function_exists('fnmatch')) {
+
+	function fnmatch($pattern, $string) {
+		return preg_match("#^".strtr(preg_quote($pattern, '#'), array('\*' => '.*', '\?' => '.'))."$#i", $string);
+	} // end
+
+} // end if
\ No newline at end of file