php-collection/graph.php: Add missing error500() function

php-collection/graph.php: Add missing error500() function

When a call to rrdtool fails or some other internal error occurs
a HTTP error with code 500 and matching error image should be
returned, added the missing error500() function which does this
the same way as error404() and error400() functions.

Signed-off-by: Florian Forster <octo@huhu.verplant.org>

diff --git a/contrib/php-collection/graph.php b/contrib/php-collection/graph.php
index e536576..17749e0 100644 (file)
--- a/contrib/php-collection/graph.php
+++ b/contrib/php-collection/graph.php
@@ -112,6 +112,13 @@ function error400($title, $msg) {
        return error(400, "Bad request", $title, $msg);
 }
 
+/**
+ * Incomplete / invalid request
+ */
+function error500($title, $msg) {
+       return error(500, "Internal error", $title, $msg);
+}
+
 // Process input arguments
 $host     = read_var('host', $_GET, null);
 if (is_null($host))