当我们发布空匿名回复时，会出现以下错误：

负责处理此问题的部分是bbp_new_reply_handler() 函数，在文件中/bbpress/includes/replies/functions.php. 其中包含我们感兴趣的几行内容：

    // User is anonymous
    if ( bbp_is_anonymous() ) {

            // Filter anonymous data
            $anonymous_data = bbp_filter_anonymous_post_data();

这里有一个演示插件

允许您发布带有空姓名和电子邮件的回复其中：

/**
 * Plugin Name: Empty Anonymous Replies in BBPress
 * Plugin URI: http://wordpress.stackexchange.com/a/133420/26350
 */

add_action( \'init\', array( \'WPSE_Empty_Anonymous_Replies\', \'init\' ) );

class WPSE_Empty_Anonymous_Replies
{
        static protected $name  = \'nobody\';
        static protected $email = \'nobody@example.com\';

        static public function init()
        {
            add_filter( \'bbp_filter_anonymous_post_data\', 
                         array( __CLASS__, \'bbp_filter_anonymous_post_data\' ),                    
                         11, 2 );
            add_filter( \'bbp_pre_anonymous_post_author_name\', 
                         array( __CLASS__,  \'bbp_pre_anonymous_post_author_name\' ) );
            add_filter( \'bbp_pre_anonymous_post_author_email\',  
                         array( __CLASS__, \'bbp_pre_anonymous_post_author_email\' ) );
        }

        static public function bbp_filter_anonymous_post_data( $retval, $r )
        {
            if( self::$name === $r[\'bbp_anonymous_name\'] 
                && self::$email === $r[\'bbp_anonymous_email\'] )
            {   
                // reset the input to skip writing cookies 
                $retval = array();

                // trick to activate the IP flood check 
                $retval[\'bbp_anonymous_flood_check\'] = \'1\';
            }       
            return $retval;
        }

        static public function bbp_pre_anonymous_post_author_name( $name )
        {
            remove_filter( current_filter(), array( __CLASS__, __FUNCTION__ ) );
            if( empty( $name ) )
                $name = self::$name;

            return $name;
        }

        static public function bbp_pre_anonymous_post_author_email( $email )
        {
            remove_filter( current_filter(), array( __CLASS__, __FUNCTION__ ) );
            if( empty( $email ) )
                $email = self::$email;

            return $email;
        }
    }