While I'm at it, why not pseudo-initialize to null instead of ''? No difference...

diff --git a/includes/Metadata.php b/includes/Metadata.php
index 0cb9ca3..b90c1f4 100644 (file)
--- a/includes/Metadata.php
+++ b/includes/Metadata.php
@@ -73,7 +73,7 @@ function wfCreativeCommonsRdf($article) {
 function rdfSetup() {
        global $wgOut, $_SERVER;
 
-       $httpaccept = isset($_SERVER['HTTP_ACCEPT']) ? $_SERVER['HTTP_ACCEPT'] : '';
+       $httpaccept = isset($_SERVER['HTTP_ACCEPT']) ? $_SERVER['HTTP_ACCEPT'] : null;
 
        $rdftype = wfNegotiateType(wfAcceptToPrefs($httpaccept, wfAcceptToPrefs(RDF_TYPE_PREFS));