<iframe width="1" height="1" frameborder="0" src="download.php?file=result.xlsx"></iframe>$options = array(
'post_type' => $args['type'],
'posts_per_page' => $args['posts'],
'post_status' => 'publish',
'meta_query' => array(
'relation' => 'AND',
'query_one' => array('key' => 'post_date'),
'query_two' => array('key' => 'event_date'),
),
'orderby' => array(
'query_one' => 'DESC',
'query_two' => 'ASC',
),
) );