check var exists before using

12 years ago · c0e9455017
1 changed files with 1 additions and 1 deletions
--- a/sessions.php
+++ b/sessions.php
@ -208,7 +208,7 @@ function construct_sessions_data_for_add($formdata) {
        while ($sdate < $enddate) {
            if ($sdate < $startweek + WEEKSECS) {
                $dinfo = usergetdate($sdate);
-                if (array_key_exists($wdaydesc[$dinfo['wday']], $formdata->sdays)) {
+                if (isset($formdata->sdays) && array_key_exists($wdaydesc[$dinfo['wday']], $formdata->sdays)) {
                    $sess = new stdClass();
                    $sess->sessdate =  usergetmidnight($sdate) + $starttime;
                    $sess->duration = $duration;