常用必备主题开发函数：

安全和优化类

/**
 * remove actions from wp_head
 */
remove_action( 'wp_head',   'feed_links_extra', 3 ); 
remove_action( 'wp_head',   'rsd_link' ); 
remove_action( 'wp_head',   'wlwmanifest_link' ); 
remove_action( 'wp_head',   'index_rel_link' ); 
remove_action( 'wp_head',   'start_post_rel_link', 10, 0 ); 
remove_action( 'wp_head',   'wp_generator' ); 



/**
 * WordPress Emoji Delete
 */
remove_action( 'admin_print_scripts' ,  'print_emoji_detection_script');
remove_action( 'admin_print_styles'  ,  'print_emoji_styles');
remove_action( 'wp_head'             ,  'print_emoji_detection_script', 7);
remove_action( 'wp_print_styles'     ,  'print_emoji_styles');
remove_filter( 'the_content_feed'    ,  'wp_staticize_emoji');
remove_filter( 'comment_text_rss'    ,  'wp_staticize_emoji');
remove_filter( 'wp_mail'             ,  'wp_staticize_emoji_for_email');