Fix travis

.travis.yml

@@ -33,7 +33,7 @@ services:
 env:
   global:
   # Set to true for very verbose output
-  - DEBUG=true
+  - DEBUG=false
   matrix:
   # MariaDB overrides MySQL installation so it's not possible to test both yet
   #- DB=mysql

htdocs/filefunc.inc.php

@@ -150,7 +150,11 @@ define('DOL_DOCUMENT_ROOT', $dolibarr_main_document_root);			// Filesystem core
 $tmp='';
 $found=0;
 $real_dolibarr_main_document_root=str_replace('\\','/',realpath($dolibarr_main_document_root));	// A) Value found into config file, to say where are store htdocs files. Ex: C:/xxx/dolibarr, C:/xxx/dolibarr/htdocs
-$pathroot=$_SERVER["DOCUMENT_ROOT"];															// B) Value reported by web server setup, to say where is root of web server instance. Ex: C:/xxx/dolibarr, C:/xxx/dolibarr/htdocs
+if (!empty($_SERVER["DOCUMENT_ROOT"])) {
+    $pathroot = $_SERVER["DOCUMENT_ROOT"];                                                      // B) Value reported by web server setup, to say where is root of web server instance. Ex: C:/xxx/dolibarr, C:/xxx/dolibarr/htdocs
+} else {
+    $pathroot = 'NOTDEFINED';
+}
 $paths=explode('/',str_replace('\\','/',$_SERVER["SCRIPT_NAME"]));								// C) Value reported by web server, to say full path on filesystem of a file. Ex: /dolibarr/htdocs/admin/system/phpinfo.php
 // Try to detect if $_SERVER["DOCUMENT_ROOT"]+start of $_SERVER["SCRIPT_NAME"] is $dolibarr_main_document_root. If yes, relative url to add before dol files is this start part.
 $concatpath='';