avoid NOTICes by checking isset() first

diff --git a/http.php b/http.php
index 76c6684..b1f2aec 100644 (file)
--- a/http.php
+++ b/http.php
@@ -8,7 +8,7 @@
 
 # return our best guess at the url used to access this page, without the path or query string
 function this_url_sans_path() {
-       if(strtolower($_SERVER['HTTPS']) == 'on' || strtolower($_SERVER['HTTPS']) == 'yes') {
+       if (isset($_SERVER['HTTPS']) && (strtolower($_SERVER['HTTPS']) == 'on' || strtolower($_SERVER['HTTPS']) == 'yes')) {
                $url = 'https';
                $expected_port = 443;
        } else {