fix empty string timezone

diff --git a/include/datetime.php b/include/datetime.php
index 6d395fe3f25d06611d2c4f047c63bcc94f00e085..1c43813d3d6ef0d5df3ddad0caedd92794fef17c 100644 (file)
--- a/include/datetime.php
+++ b/include/datetime.php
@@ -80,6 +80,13 @@ function field_timezone($name='timezone', $label='', $current = 'America/Los_Ang
 if(! function_exists('datetime_convert')) {
 function datetime_convert($from = 'UTC', $to = 'UTC', $s = 'now', $fmt = "Y-m-d H:i:s") {
 
+       // Defaults to UTC if nothing is set, but not if set to empty string.
+
+       if($from == '')
+               $from = 'UTC';
+       if($to == '')
+               $to = 'UTC';
+
        // Slight hackish adjustment so that 'zero' datetime actually returns what is intended
        // otherwise we end up with -0001-11-30 ...
        // add 32 days so that we at least get year 00, and then hack around the fact that