我已经将我的Wordpress版本从4.3.1更新到了4.5.2，显然它打破了我过去所做的自定义功能
What it does: 在后端的“批准/回答/编辑/垃圾邮件/删除”旁边的“注释”下方显示锚定。单击anchor，它会将我重定向到“wp admin/cust\\u comment.php？c=ID和action=（un）highlightcomment&；\\u wpnance=HASH”。从这一点开始，它应该将注释meta\\u键“highlight”更新为1或0。但我收到的只是一张空白页。

cust\\u注释。php

<?php
require_once( dirname( __FILE__ ) . \'/admin.php\' );
wp_reset_vars( array(\'action\') );
$comment_id = absint( $_GET[\'c\'] );

switch( $action ) {

    case \'highlightcomment\'    :
    case \'unhighlightcomment\'  :

        $noredir = isset($_REQUEST[\'noredir\']);

        if ( !$comment = get_comment($comment_id) )
            comment_footer_die( __( \'Invalid comment ID.\' ) . sprintf(\' <a href="%s">\' . __(\'Go back\') . \'</a>.\', \'edit-comments.php\') );
        if ( !current_user_can( \'edit_comment\', $comment->comment_ID ) )
            comment_footer_die( __(\'You are not allowed to edit comments on this post.\') );

        if ( \'\' != wp_get_referer() && ! $noredir && false === strpos(wp_get_referer(), \'comment.php\') )
            $redir = wp_get_referer();
        elseif ( \'\' != wp_get_original_referer() && ! $noredir )
            $redir = wp_get_original_referer();
        elseif ( in_array( $action, array( \'highlightcomment\', \'unhighlightcomment\' ) ) )
            $redir = admin_url(\'edit-comments.php?p=\' . absint( $comment->comment_post_ID ) );
        else
            $redir = admin_url(\'edit-comments.php\');

        $redir = remove_query_arg( array(\'highlighted\', \'unhighlighted\'), $redir );

        switch ($action) {

            case \'highlightcomment\' :
                update_comment_meta($comment_id, \'highlight\', 1);
                $redir = add_query_arg( array(\'highlighted\' => \'1\'), $redir );
                break;

            case \'unhighlightcomment\' :
                update_comment_meta($comment_id, \'highlight\', 0);
                $redir = add_query_arg( array(\'unhighlighted\' => \'1\'), $redir );
                break;
        }

        wp_redirect( $redir );
        die;

        break;

    default:
        wp_die( __(\'Unknown action.\') );

} // end switch

功能。php

add_filter(\'comment_row_actions\', \'cust_hightlight_comment_action\', 10, 2);
function cust_hightlight_comment_action($actions, $comment) {

    $highlight_nonce = esc_html( \'_wpnonce=\' . wp_create_nonce( "approve-comment_$comment->comment_ID" ) );

    $url = "cust_comment.php?c=$comment->comment_ID";
    $highlight_url =  $url . "&action=highlightcomment&$highlight_nonce";
    $unhighlight_url = $url . "&action=unhighlightcomment&$highlight_nonce";

    if (!get_comment_meta( $comment->comment_ID, \'highlight\', true) )
        $actions[\'highlighter\'] = "<a href=\'$highlight_url\' class=\'vim-a\'>" . _x( \'Highlight\' ) . \'</a>\';
    else
        $actions[\'unhighlighter\'] = "<a href=\'$unhighlight_url\' class=\'vim-u\'>" . _x( \'Don\\\'t highlight\') . \'</a>\';

    return $actions;
}