php - Wordpress:第二个参数的数据类型错误？

Question

昨天升级wordpress后我收到了这个错误。它指向我的插件之一:

Warning: in_array() [function.in-array]: Wrong datatype for second argument in /home/healt134/public_html/wp-content/plugins/video-thumbnails/video-thumbnails.php on line 402

Warning: Cannot modify header information - headers already sent by

(output started at /home/healt134/public_html/wp-content/plugins/video-thumbnails/video-thumbnails.php:402) in /home/healt134/public_html/wp-includes/pluggable.php on line 897

我查看了 402 中的代码(标有星号)，但没有发现问题或多余的空白。任何人都知道我可以做些什么来阻止这个错误？

    function save_video_thumbnail( $post ){
        $post_type = get_post_type( $post->ID );
        $video_thumbnails_post_types = get_option('video_thumbnails_post_types');
***     if ( defined('DOING_AUTOSAVE') && DOING_AUTOSAVE ) {
            return null;
        } else {
            // Check that Video Thumbnails are enabled for current post type
            if (in_array($post_type, $video_thumbnails_post_types) OR $post_type == $video_thumbnails_post_types) {
                get_video_thumbnail($post->ID);
        } else {
            return null;
        }
    }
}

Answer 1

我认为您在那里偏离了几行，请尝试降低 4 行。我的猜测是 $video_thumbnails_post_types不是数组。

来自 if 中的第二个条件声明，看起来像 $video_thumbnails_post_types可以是标量(字符串、整数等)。如果您愿意，请将代码修改为

if (in_array($post_type, (array) $video_thumbnails_post_types)
    || $post_type == $video_thumbnails_post_types)