我遇到了一个问题，我已经安排了一段时间的活动，然后就停止了。查看事件队列后，我发现已计划的事件不再在队列中。

如果我停用插件，然后重新激活插件，那么时间表就会回来，并在一段时间内工作。

我不知道WordPress是否有在事件超时或类似情况下删除事件的功能。

这是我的代码：

register_activation_hook(__FILE__, \'k2_section_featured_ads_setup\');
function k2_section_featured_ads_setup() {
    wp_schedule_event(\'1395871200\', \'minutely\', \'k2_section_featured_ads_hook\');
}

register_deactivation_hook(__FILE__, \'k2_section_featured_ads_deactivation\');
function k2_section_featured_ads_deactivation() {

    $featured_next = wp_next_scheduled(\'k2_section_featured_ads_hook\');
    wp_unschedule_event($featured_next, \'k2_section_featured_ads_hook\');
}

add_action(\'k2_section_featured_ads_hook\', \'k2_section_featured_ads_check_time\');

function k2_section_featured_ads_check_time() {
    // function here
}

function k2_cron_add_schedules( $schedules ) {
    $schedules[\'quarterday\'] = array(
        \'interval\' => 14400,
        \'display\' => __(\'Once every 4 hours\')
    );
    $schedules[\'minutely\'] = array(
        \'interval\' => 60,
        \'display\' => __(\'Once every 1 minute\')
    );
    return $schedules;
}
add_filter(\'cron_schedules\', \'k2_cron_add_schedules\');