尝试使用update_option 方法此代码适用于我的单个值ad_url, 但我的阵列失败exclude_posts. Chrome开发面板中的POST数据显示exclude_posts[] 获取值5，但wpdb中没有任何内容。

选项。php

<form method="post" action="options.php">
<?php
    settings_fields(\'insert-video-ad-settings\');
    do_settings_sections(\'insert-video-ad-settings\');
?>
    <input id=adurl type="textarea" name="ad_url" autocomplete="off" value="<?php
    echo get_option(\'ad_url\');
    ?>"/>

<?php
if(isset($_POST[\'exclude_posts\'])) {
     $exclude_posts = $_POST[\'exclude_posts\'];
}

if( isset( $exclude_posts ) )
{
   update_option( \'exclude_posts\', $exclude_posts );
}
else
{
   delete_option( \'exclude_posts\' );
}
?>

<select id="exclude_posts" name="exclude_posts[]" multiple="multiple">
       <?php
       $postslist = get_posts(array(
          \'order\' => \'ASC\',
          \'orderby\' => \'date\'
       ));
       $exclude = get_option(\'exclude_posts\');
       If(!$exclude){
          $exclude=array();
       }
  if ($postslist) {
    global $post;
    foreach ($postslist as $post)
          {
          ?>
             <option value="<?php echo $post->ID; ?>" <?php echo ( in_array( $post->ID, $exclude ) ? \'selected\' : \'\' ); ?> >
                <?php echo $post->post_title; ?>
             </option>
          <?php
          }
        }
       ?>
</select>

add_action(\'admin_init\', \'update_ad_url\');

if (!function_exists("update_ad_url")) {
    function update_ad_url()
    {
        register_setting(\'insert-video-ad-settings\', \'ad_url\');
    }
}

add_action(\'admin_init\', \'update_exclude_posts\');

if (!function_exists("update_exclude_posts")) {
    function update_exclude_posts()
    {
        register_setting(\'insert-video-ad-settings\', \'exclude_posts\');
    }
}