From 603f048722853143a8cb41cf2ba3d4956c8a96c5 Mon Sep 17 00:00:00 2001
From: Adrien Bonnel <adrien.bonnel@gmail.com>
Date: Mon, 17 May 2021 08:29:34 +0200
Subject: [PATCH] Fix PHP 5.X (#494)

Arrays cannot be used in "define" functions with PHP versions lower than 7.X
Solution given via my professional account (ArlorNaturalScientific)
---
 tinyfilemanager.php | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/tinyfilemanager.php b/tinyfilemanager.php
index 811fda3..657c6e9 100644
--- a/tinyfilemanager.php
+++ b/tinyfilemanager.php
@@ -369,7 +369,7 @@ defined('FM_ROOT_PATH') || define('FM_ROOT_PATH', $root_path);
 defined('FM_LANG') || define('FM_LANG', $lang);
 defined('FM_FILE_EXTENSION') || define('FM_FILE_EXTENSION', $allowed_file_extensions);
 defined('FM_UPLOAD_EXTENSION') || define('FM_UPLOAD_EXTENSION', $allowed_upload_extensions);
-defined('FM_EXCLUDE_ITEMS') || define('FM_EXCLUDE_ITEMS', $exclude_items);
+defined('FM_EXCLUDE_ITEMS') || define('FM_EXCLUDE_ITEMS', (version_compare(PHP_VERSION, '7.0.0', '<') ? serialize($exclude_items) : $exclude_items));
 defined('FM_DOC_VIEWER') || define('FM_DOC_VIEWER', $online_viewer);
 define('FM_READONLY', $use_auth && !empty($readonly_users) && isset($_SESSION[FM_SESSION_ID]['logged']) && in_array($_SESSION[FM_SESSION_ID]['logged'], $readonly_users));
 define('FM_IS_WIN', DIRECTORY_SEPARATOR == '\\');
@@ -2401,7 +2401,15 @@ function fm_get_parent_path($path)
  */
 function fm_is_exclude_items($file) {
     $ext = strtolower(pathinfo($file, PATHINFO_EXTENSION));
-    if(!in_array($file, FM_EXCLUDE_ITEMS) && !in_array("*.$ext", FM_EXCLUDE_ITEMS)) {
+    if (sizeof($exclude_items)) {
+        unset($exclude_items);
+    }
+
+    $exclude_items = FM_EXCLUDE_ITEMS;
+    if (version_compare(PHP_VERSION, '7.0.0', '<')) {
+        $exclude_items = unserialize($exclude_items);
+    }
+    if (!in_array($file, $exclude_items) && !in_array("*.$ext", $exclude_items)) {
         return true;
     }
     return false;