From 5cf9a5c1330d7d8201d181c35933424c8302301d Mon Sep 17 00:00:00 2001
From: Dave Longley <dlongley@digitalbazaar.com>
Date: Fri, 8 Mar 2013 13:50:18 -0500
Subject: [PATCH] Fix bug to remove warning with empty delimiter.

---
 jsonld.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/jsonld.php b/jsonld.php
index e614852..60d18b0 100644
--- a/jsonld.php
+++ b/jsonld.php
@@ -515,7 +515,7 @@ function jsonld_remove_base($base, $iri) {
   }
 
   // IRI not relative to base
-  if(strpos($iri, $root) !== 0) {
+  if($root === '' || strpos($iri, $root) !== 0) {
     return $iri;
   }