只需使用template\\u redirect filter对您在wordpress中得到的请求执行检查。

add_filter(\'template_redirect\', \'my_404_override\' );

function my_404_override() {
    global $wp_query;

    if (!$wp_query->post) {         // Check if any post is found. If not its 404.
        status_header( 200 );
        $wp_query->is_404=false;

        // Create post object
        $my_post = array(
          \'post_title\'    => \'My post\',
          \'post_content\'  => \'This is my post.\',
          \'post_status\'   => \'publish\',
          \'post_author\'   => 1,
          \'post_category\' => array(8,39)
        );

        // Insert the post into the database
        $post_id = wp_insert_post( $my_post );      // Add new post in to the system
        wp_redirect( get_permalink( $post_id ) );   // Finally redirect it to the post.
    }
}