'facility',
'posts_per_page' => -1,
'meta_key' => 'f_pref',
'meta_value' => $pref
);
$cq = new WP_Query($args);
$arr_active_city = array();
if ($cq->have_posts()) :
while ($cq->have_posts()) :
$cq->the_post();
$arr_active_city[] = get_field('f_city');
endwhile;
else :
endif;
foreach ($arr_city[$pref] as $key => $city) :
?>