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<?php
class Exams
{
/**
* @param int[] of location ids. must bot be an associative array.
* @return: bool true iff for any of the given location ids an exam is scheduled.
**/
public static function isInExamMode($locationIds, &$lectureId)
{
if (!is_array($locationIds)) {
$locationIds = array($locationIds);
} elseif (empty($locationIds)) {
return false;
}
$l = str_repeat(',?', count($locationIds));
$res = Database::queryFirst("SELECT lectureid FROM exams"
. " INNER JOIN exams_x_location USING (examid)"
. " WHERE UNIX_TIMESTAMP() BETWEEN starttime AND endtime AND locationid IN (0$l) LIMIT 1", $locationIds);
if ($res !== false) {
$lectureId = $res['lectureid'];
}
return $res !== false;
}
}
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