From 51e0d5cd405d764a4ea257d1bac1fb1205f74528 Mon Sep 17 00:00:00 2001
From: uwetews <uwe.tews@googlemail.com>
Date: Tue, 6 Sep 2016 04:26:46 +0200
Subject: [PATCH] - performance require_once should be called only once for
 shared plugins https://github.com/smarty-php/smarty/issues/280

---
 libs/plugins/modifier.date_format.php | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/libs/plugins/modifier.date_format.php b/libs/plugins/modifier.date_format.php
index a9b2997c9..bfe363c08 100644
--- a/libs/plugins/modifier.date_format.php
+++ b/libs/plugins/modifier.date_format.php
@@ -32,6 +32,12 @@ function smarty_modifier_date_format($string, $format = null, $default_date = ''
     if ($format === null) {
         $format = Smarty::$_DATE_FORMAT;
     }
+    /**
+     * require_once the {@link shared.make_timestamp.php} plugin
+     */
+    if (!is_callable('smarty_make_timestamp')) {
+        require_once(SMARTY_PLUGINS_DIR . 'shared.make_timestamp.php');
+    }
     if ($string != '' && $string != '0000-00-00' && $string != '0000-00-00 00:00:00') {
         $timestamp = smarty_make_timestamp($string);
     } elseif ($default_date != '') {