prevent warning when no categories are defined

1 files changed, 6 insertions, 4 deletions

diff --git a/index.php b/index.php
index cf0cb85..437093d 100644
--- a/index.php
+++ b/index.php
@@ -9,10 +9,12 @@ html_start();
 $h = array();
 
 # show all categorized hosts
-foreach($CONFIG['cat'] as $cat => $hosts) {
-        printf("<h2>%s</h2>\n", $cat);
-        host_summary($hosts);
-        $h = array_merge($h, $hosts);
+if (is_array($CONFIG['cat'])) {
+        foreach($CONFIG['cat'] as $cat => $hosts) {
+                printf("<h2>%s</h2>\n", $cat);
+                host_summary($hosts);
+                $h = array_merge($h, $hosts);
+        }
 }
 
 # search for uncategorized hosts