PHP foreach 仅在第一次迭代中显示值

Question

我在 wordpress 中有一个自定义 post 类型的节目列表。我有一个我放在一起的自定义日历插件，但是在我的 for each 循环中从 post 中提取所有值时遇到问题。

当我启动 foreach 并打印出所有值时，它第一次显示一切正常，但之后的每次迭代都不会显示所有值（例如内容）。

for ($i = 1; $i <= $cal->days_in_month; $i++) {
    echo '<li class="date_top"><span class="day">'.$i.'</span><ol>';
    foreach ($cal->events as $event) {
        if($i == date("j", $event['date_object']) && 
                $cal->month_selected == date("n", $event['date_object'])) {

print_r($event); 

        }
    }

    echo '</ol></li>';
}

这是我从 post 中获取数据的函数。

function load_month_events() {
        $query = $this->month_events();
        foreach ($query as $post) {
            $event = array();
            $event['title'] = $post->post_title;
            $event['date'] = get_post_meta($post->ID, 'start_date', true);
            $event['end_date'] = get_post_meta($post->ID, 'end_date', true);
            $event['permalink'] = get_permalink($post->ID);
            $event['date_object'] = to_date_object($event['date']);
            $content_post = get_post($post->ID);
            $event['content'] = $content_post->post_content;

            $shows_categories = wp_get_post_terms($post->ID, 'shows_category');
            $showseason_string = "";
            foreach($shows_categories as $category) {
                $showseason_string = $showseason_string . $category->slug . " ";
            }
            $event['showseason'] = $showseason_string;
            $this->events[] = $event; 
        }
        $this->duplicate_multiday();
        usort($this->events, "cmp");
    }

以及一个输出示例（它正确调用了一个月中的所有 31 天并列出了当天发生的事件，但没有提取内容和结束日期。）

1
Array ( [title] => A choirs line [date] => 20150101 [end_date] => 20150131 [permalink] => http://localhost:8888/shows/a-choirs-line/ [date_object] => 1420070400 [content] => A Choirs Line Content Goes Here [showseason] => 2014-2015-season )
2
Array ( [title] => A choirs line [permalink] => http://localhost:8888/shows/a-choirs-line/ [showseason] => 2014-2015-season [date] => 20150102 [date_object] => 1420156800 )

提前感谢您提供的任何指导！我觉得我以前遇到过这个，但我不记得我是如何解决它的，此时我正在用头撞墙。

编辑： 修复是将数组字段添加到函数 duplicate_multiday

function duplicate_multiday() {
        foreach($this->events as $event) {
            if($event['end_date'] && $event['date'] != $event['end_date']) {
                $date1 = new DateTime($event['date']);
            $date2 = new DateTime($event['end_date']);
            $interval = $date1->diff($date2);
            for($x=1; $x <= $interval->days; $x++) {
                $new_event = array();
                $new_event['title'] = $event['title'];
                $new_event['permalink'] = $event['permalink'];
                $new_event['content'] = $event['content'];
                $new_event['end_date'] = $event['end_date'];
                $new_event['showseason'] = $event['showseason'];
                error_log($event['showseason']);
                $new_event['date'] = date_format($date1->add(new DateInterval('P1D')), "Ymd");
                $new_event['date_object'] = to_date_object($new_event['date']);
                $this->events[] = $new_event;
            }
            }
        }
    }

Answer 1

你在self::duplicate_multiday()中修改了$this->events的数据，你在其中复制了事件，但是你没有复制一些信息，比如你正在复制的“content”数组字段失踪。

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