WordPress程序/functions.php收集整理的各种自定义优化代码分享

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所属分类：WordPress技巧
  1. <!--以下代码为主题目录下functions.php文件内代码!-->
  4. add_filter('automatic_updater_disabled', '__return_true');
  7. remove_action('init', 'wp_schedule_update_checks');
  10. wp_clear_scheduled_hook('wp_version_check');
  13. wp_clear_scheduled_hook('wp_update_plugins');
  16. wp_clear_scheduled_hook('wp_update_themes');
  19. wp_clear_scheduled_hook('wp_maybe_auto_update');
  22. remove_action( 'admin_init', '_maybe_update_core' );
  25. remove_action( 'load-plugins.php', 'wp_update_plugins' );
  26. remove_action( 'load-update.php', 'wp_update_plugins' );
  27. remove_action( 'load-update-core.php', 'wp_update_plugins' );
  28. remove_action( 'admin_init', '_maybe_update_plugins' );
  31. remove_action( 'load-themes.php', 'wp_update_themes' );
  32. remove_action( 'load-update.php', 'wp_update_themes' );
  33. remove_action( 'load-update-core.php', 'wp_update_themes' );
  34. remove_action( 'admin_init', '_maybe_update_themes' );
  37. remove_action( 'wp_head', 'rest_output_link_wp_head', 10 );
  38. remove_action( 'wp_head', 'wp_oembed_add_discovery_links', 10 );
  39. remove_action( 'template_redirect', 'rest_output_link_header', 11 );
  42. add_filter('pre_site_transient_update_core', create_function('$a', "return null;"));
  45. add_filter('pre_site_transient_update_plugins', create_function('$a', "return null;"));
  48. add_filter('pre_site_transient_update_themes', create_function('$a', "return null;"));
  51. function bf_google_font($content)
  52. {
  53. return str_replace('fonts.googleapis.com', 'fonts.useso.com', $content);
  54. return str_replace('ajax.googleapis.com', 'ajax.useso.com', $content);
  55. }
  58. add_filter('xmlrpc_enabled', '__return_false');
  61. add_filter('xmlrpc_methods', 'remove_xmlrpc_pingback_ping');
  62. function remove_xmlrpc_pingback_ping( $methods ) {
  63. unset( $methods['pingback.ping'] );
  64. return $methods;
  65. }
  68. function wp_remove_open_sans_from_wp_core() {
  69. wp_deregister_style( 'open-sans' );
  70. wp_register_style( 'open-sans', false );
  71. wp_enqueue_style('open-sans','');
  72. }
  73. add_action( 'init', 'wp_remove_open_sans_from_wp_core' );
  76. class Disable_Google_Fonts {
  77. public function __construct() {
  78. add_filter( 'gettext_with_context', array( $this, 'disable_open_sans' ), 888, 4 );
  79. }
  80. public function disable_open_sans( $translations, $text, $context, $domain ) {
  81. if ( 'Open Sans font: on or off' == $context && 'on' == $text ) {
  82. $translations = 'off';
  83. }
  84. return $translations;
  85. }
  86. }
  87. $disable_google_fonts = new Disable_Google_Fonts;
  90. add_filter('json_enabled', '__return_false');
  91. add_filter('json_jsonp_enabled', '__return_false');
  94. function no_self_ping( &$links ) {
  95. $home = get_option( 'home' );
  96. foreach ( $links as $l => $link )
  97. if ( 0 === strpos( $link, $home ) )
  98. unset($links[$l]);
  99. }
  100. add_action( 'pre_ping', 'no_self_ping' );
  103. add_filter('xmlrpc_enabled', '__return_false');
  104. add_filter('xmlrpc_methods', 'remove_xmlrpc_pingback_ping');
  105. function remove_xmlrpc_pingback_ping( $methods ) {
  106. unset( $methods['pingback.ping'] );
  107. return $methods;
  108. }
  111. function mytheme_get_avatar($avatar) {
  112. $avatar = str_replace(array("www.gravatar.com","0.gravatar.com","1.gravatar.com","2.gravatar.com"),"gravatar.duoshuo.com",$avatar);
  113. return $avatar;
  114. }
  115. add_filter( 'get_avatar', 'mytheme_get_avatar', 10, 3 );
  118. function my_modify_jquery() {
  119. if (!is_admin()) {
  120. wp_deregister_script('jquery');
  121. wp_deregister_script('jquery-form');
  122. wp_register_script('jquery', ('https://cdn.bootcss.com/jquery/2.2.4/jquery.min.js'), false, null, true); 
  123. wp_register_script('jquery-form', ('https://cdn.bootcss.com/jquery.form/4.2.2/jquery.form.min.js'), array(jquery), null, true);
  124. }
  125. }
  128. add_filter('get_avatar', function ($avatar) {
  129. return str_replace([
  130. 'www.gravatar.com/avatar/',
  131. '0.gravatar.com/avatar/',
  132. '1.gravatar.com/avatar/',
  133. '2.gravatar.com/avatar/',
  134. 'secure.gravatar.com/avatar/',
  135. 'cn.gravatar.com/avatar/'
  136. ], 'sdn.geekzu.org/avatar/', $avatar);
  137. });
  140. function disable_embeds_init() {
  141. global $wp;
  142. $wp->public_query_vars = array_diff( $wp->public_query_vars, array(
  143. 'embed',
  144. ) );
  145. remove_action( 'rest_api_init', 'wp_oembed_register_route' );
  146. add_filter( 'embed_oembed_discover', '__return_false' );
  147. remove_filter( 'oembed_dataparse', 'wp_filter_oembed_result', 10 );
  148. remove_action( 'wp_head', 'wp_oembed_add_discovery_links' );
  149. remove_action( 'wp_head', 'wp_oembed_add_host_js' );
  150. add_filter( 'tiny_mce_plugins', 'disable_embeds_tiny_mce_plugin' );
  151. add_filter( 'rewrite_rules_array', 'disable_embeds_rewrites' );
  152. }
  153. add_action( 'init', 'disable_embeds_init', 9999 );
  154. function disable_embeds_tiny_mce_plugin( $plugins ) {
  155. return array_diff( $plugins, array( 'wpembed' ) );
  156. }
  157. function disable_embeds_rewrites( $rules ) {
  158. foreach ( $rules as $rule => $rewrite ) {
  159. if ( false !== strpos( $rewrite, 'embed=true' ) ) {
  160. unset( $rules[ $rule ] );
  161. }
  162. }
  163. return $rules;
  164. }
  165. function disable_embeds_remove_rewrite_rules() {
  166. add_filter( 'rewrite_rules_array', 'disable_embeds_rewrites' );
  167. flush_rewrite_rules();
  168. }
  169. register_activation_hook( __FILE__, 'disable_embeds_remove_rewrite_rules' );
  170. function disable_embeds_flush_rewrite_rules() {
  171. remove_filter( 'rewrite_rules_array', 'disable_embeds_rewrites' );
  172. flush_rewrite_rules();
  173. }
  174. register_deactivation_hook( __FILE__, 'disable_embeds_flush_rewrite_rules' );
  177. add_filter( 'automatic_updater_disabled', '__return_true' );
  180. function remove_dns_prefetch( $hints, $relation_type ) {
  181. if ( 'dns-prefetch' === $relation_type ) {
  182. return array_diff( wp_dependencies_unique_hosts(), $hints );
  183. }
  184. return $hints;
  185. }
  186. add_filter( 'wp_resource_hints', 'remove_dns_prefetch', 10, 2 );
  189. function hc_cdn_callback($buffer) {
  190. return str_replace('ajax.googleapis.com/ajax/libs/jqueryui/1.8.21/themes/smoothness/jquery-ui.css', 'cdn.bootcss.com/jqueryui/1.12.1/jquery-ui.min.css', $buffer);
  191. }
  192. function hc_buffer_start() {
  193. ob_start("hc_cdn_callback");
  194. }
  195. function izt_buffer_end() {
  196. ob_end_flush();
  197. }
  198. add_action('init', 'hc_buffer_start');
  199. add_action('shutdown', 'hc_buffer_end');
  202. add_action( 'init', 'my_deregister_heartbeat', 1 );
  203. function my_deregister_heartbeat() {
  204. global $pagenow;
  205. if ( 'post.php' != $pagenow && 'post-new.php' != $pagenow )
  206. wp_deregister_script('heartbeat');
  207. }
  210. add_action('init', 'wpdaxue_change_author_base');
  211. function wpdaxue_change_author_base() {
  212. global $wp_rewrite;
  213. $author_slug = '500'; 
  214. $wp_rewrite->author_base = $author_slug;
  215. }
  218. add_filter( 'author_link', 'modify_author_link', 10, 1 ); 
  219. function modify_author_link( $link ) { 
  220. $link = 'https://www.baidu.com/'; 
  221. return $link;  
  222. }
  226. add_filter('use_block_editor_for_post', '__return_false');
  228. remove_action('wp_enqueue_scripts', 'wp_common_block_scripts_and_styles');
  231. if( wb_opt('gutenberg_switch') ) {
  232. add_filter('use_block_editor_for_post_type',function($is_user,$post_type){return false;},10,2);
  234. add_action( 'wp_enqueue_scripts', 'tonjay_remove_block_library_css', 100 );
  235. function tonjay_remove_block_library_css() {
  236. wp_dequeue_style( 'wp-block-library' );
  237. }
  238. }
  241. add_filter('the_content','the_content_nofollow',999);
  242. function the_content_nofollow($content){
  243. preg_match_all('/href="/go.php?url=KC4qPyk=" rel="external nofollow" /',$content,$matches);
  244. if($matches){
  245. foreach($matches[1] as $val){
  246. if( strpos($val,home_url())===false ) $content=str_replace("href=\"$val\"", "href=\"$val\" rel=\"external nofollow\" ",$content);
  247. }
  248. }
  249. return $content;
  250. }
  253. if(!function_exists('Baidu_Submit')){
  254. function Baidu_Submit($post_ID) {
  255. $WEB_TOKEN = ''; 
  256. $WEB_DOMAIN = get_option('home');
  258. if(get_post_meta($post_ID,'Baidusubmit',true) == 1) return;
  259. $url = get_permalink($post_ID);
  260. $api = 'http://data.zz.baidu.com/urls?site='.$WEB_DOMAIN.'&token='.$WEB_TOKEN;
  261. $request = new WP_Http;
  262. $result = $request->request( $api , array( 'method' => 'POST', 'body' => $url , 'headers' => 'Content-Type: text/plain') );
  263. $result = json_decode($result['body'],true);
  265. if (array_key_exists('success',$result)) {
  266. add_post_meta($post_ID, 'Baidusubmit', 1, true);
  267. }
  268. }
  269. add_action('publish_post', 'Baidu_Submit', 0);
  270. }
  273. add_filter( 'post_thumbnail_html', 'fanly_remove_images_attribute', 10 );
  274. add_filter( 'image_send_to_editor', 'fanly_remove_images_attribute', 10 );
  275. function fanly_remove_images_attribute( $html ) {
  277. $html = preg_replace( '/width="(\d*)"\s+height="(\d*)"\s+class="[^"]*"/', "", $html );
  278. $html = preg_replace( '/ /', "", $html );
  279. return $html;
  280. }
  283. add_action( 'admin_menu', 'remove_site_health_menu' ); 
  284. function remove_site_health_menu(){
  285. remove_submenu_page( 'tools.php','site-health.php' ); 
  286. }
  289. function my_filter_head(){
  290. remove_action( 'wp_head','_admin_bar_bump_cb');
  291. remove_action( 'wp_head','feed_links_extra',3 );
  292. remove_action( 'wp_head','feed_links',2 );
  293. remove_action( 'wp_head','rsd_link' );
  294. remove_action( 'wp_head','wlwmanifest_link' );
  295. remove_action( 'wp_head','index_rel_link' );
  296. remove_action( 'wp_head','parent_post_rel_link',10,0 );
  297. remove_action( 'wp_head','start_post_rel_link',10,0 );
  298. remove_action( 'wp_head','adjacent_posts_rel_link',10,0 );
  299. remove_action( 'wp_head','wp_generator' );
  300. }
  301. add_action('get_header','my_filter_head');
  304. remove_action( 'admin_print_scripts',   'print_emoji_detection_script');
  305. remove_action( 'admin_print_styles',    'print_emoji_styles');
  306. remove_action( 'wp_head',       'print_emoji_detection_script', 7);
  307. remove_action( 'wp_print_styles',   'print_emoji_styles');
  308. remove_filter( 'the_content_feed',  'wp_staticize_emoji');
  309. remove_filter( 'comment_text_rss',  'wp_staticize_emoji');
  310. remove_filter( 'wp_mail',       'wp_staticize_emoji_for_email');
  311. remove_action( 'wp_head', 'feed_links_extra', 3 ); 
  312. remove_action( 'wp_head', 'feed_links', 2 ); 
  313. remove_action( 'wp_head', 'rsd_link' ); 
  314. remove_action( 'wp_head', 'wlwmanifest_link' ); 
  315. remove_action( 'wp_head', 'index_rel_link' ); 
  316. remove_action( 'wp_head', 'parent_post_rel_link', 10, 0 ); 
  317. remove_action( 'wp_head', 'start_post_rel_link', 10, 0 ); 
  318. remove_action( 'wp_head', 'wp_shortlink_wp_head', 10, 0 );
  319. remove_action( 'wp_head', 'adjacent_posts_rel_link', 10, 0 ); 
  320. remove_action( 'wp_head', 'wp_generator' ); 
  323. function ludou_remove_width_height_attribute($content){
  324. preg_match_all('/<[img|IMG].*?src=[\'|"](.*?(?:[\.gif|\.jpg|\.png\.bmp]))[\'|"].*?[\/]?>/', $content, $images);
  325. if(!empty($images)) {
  326. foreach($images[0] as $index => $value){
  327. $new_img = preg_replace('/(width|height)="\d*"\s/', "", $images[0][$index]);
  328. $content = str_replace($images[0][$index], $new_img, $content);
  329. }
  330. }
  331. return $content;
  332. }
  335. function v7v3_remove_image_size($sizes) {
  336. unset( $sizes['small'] );
  337. unset( $sizes['medium'] );
  338. unset( $sizes['large'] );
  339. return $sizes;
  340. }
  341. add_filter('image_size_names_choose', 'v7v3_remove_image_size');
  344. function delete_post_and_attachments($post_ID) {
  345. global $wpdb;
  348. $thumbnails = $wpdb->get_results( "SELECT * FROM $wpdb->postmeta WHERE meta_key = '_thumbnail_id' AND post_id = $post_ID" ); 
  349. foreach ( $thumbnails as $thumbnail ) {
  350. wp_delete_attachment( $thumbnail->meta_value, true ); 
  351. }
  354. $attachments = $wpdb->get_results( "SELECT * FROM $wpdb->posts WHERE post_parent = $post_ID AND post_type = 'attachment'" );
  355. foreach ( $attachments as $attachment ) {
  356. wp_delete_attachment( $attachment->ID, true ); 
  357. } 
  358. $wpdb->query( "DELETE FROM $wpdb->postmeta WHERE meta_key = '_thumbnail_id' AND post_id = $post_ID" ); 
  359. }
  360. add_action('before_delete_post', 'delete_post_and_attachments');
  363. function shapeSpace_disable_image_sizes($sizes) {
  364. unset($sizes['thumbnail']);    
  365. unset($sizes['medium']);       
  366. unset($sizes['large']);        
  367. unset($sizes['medium_large']); 
  368. unset($sizes['1536x1536']);    
  369. unset($sizes['2048x2048']);    
  370. return $sizes;
  371. }
  372. add_action('intermediate_image_sizes_advanced', 'shapeSpace_disable_image_sizes');
  374. add_filter('big_image_size_threshold', '__return_false');
  376. function shapeSpace_disable_other_image_sizes() {
  377. remove_image_size('post-thumbnail'); 
  378. remove_image_size('another-size');   
  379. }
  380. add_action('init', 'shapeSpace_disable_other_image_sizes');
  383. if(strlen($_SERVER['REQUEST_URI']) > 366 ||
  384. strpos($_SERVER['REQUEST_URI'], "eval(") ||
  385. strpos($_SERVER['REQUEST_URI'], "base64")) {
  386. @header("HTTP/1.1 414 Request-URI Too Long");
  387. @header("Status: 414 Request-URI Too Long");
  388. @header("Connection: Close");
  389. @exit;
  390. }
  393. session_start(); 
  394. $timestamp = time();
  395. $ll_nowtime = $timestamp;
  398. if ($_SESSION){
  399. $ll_lasttime = $_SESSION['ll_lasttime'];
  400. $ll_times = $_SESSION['ll_times'] + 1;
  401. $_SESSION['ll_times'] = $ll_times;
  402. }else{
  403. $ll_lasttime = $ll_nowtime;
  404. $ll_times = 1;
  405. $_SESSION['ll_times'] = $ll_times;
  406. $_SESSION['ll_lasttime'] = $ll_lasttime;
  407. }
  410. function tin_custom_upload_name($file){
  411. if(preg_match('/[一-龥]/u',$file['name'])):
  412. $ext=ltrim(strrchr($file['name'],'.'),'.');
  413. $file['name']=preg_replace('#^www\.#', '', strtolower($_SERVER['SERVER_NAME'])).'_'.date('Y-m-d_H-i-s').'.'.$ext;
  414. endif;
  415. return $file;
  416. }
  417. add_filter('wp_handle_upload_prefilter','tin_custom_upload_name',5,1);
  420. function cx_archive_link( $paged = true ) {
  421. $link = false;
  422. if ( is_front_page() ) {
  423. $link = home_url( '/' );
  424. } else if ( is_home() && "page" == get_option('show_on_front') ) {
  425. $link = get_permalink( get_option( 'page_for_posts' ) );
  426. } else if ( is_tax() || is_tag() || is_category() ) {
  427. $term = get_queried_object();
  428. $link = get_term_link( $term, $term->taxonomy );
  429. } else if ( is_post_type_archive() ) {
  430. $link = get_post_type_archive_link( get_post_type() );
  431. } else if ( is_author() ) {
  432. $link = get_author_posts_url( get_query_var('author'), get_query_var('author_name') );
  433. } else if ( is_single() ) {
  434. $link = get_permalink( $id );
  435. } else if ( is_archive() ) {
  436. if ( is_date() ) {
  437. if ( is_day() ) {
  438. $link = get_day_link( get_query_var('year'), get_query_var('monthnum'), get_query_var('day') );
  439. } else if ( is_month() ) {
  440. $link = get_month_link( get_query_var('year'), get_query_var('monthnum') );
  441. } else if ( is_year() ) {
  442. $link = get_year_link( get_query_var('year') );
  443. }
  444. }
  445. }
  446. if ( $paged && $link && get_query_var('paged') > 1 ) {
  447. global $wp_rewrite;
  448. if ( !$wp_rewrite->using_permalinks() ) {
  449. $link = add_query_arg( 'paged', get_query_var('paged'), $link );
  450. } else {
  451. $link = user_trailingslashit( trailingslashit( $link ) . trailingslashit( $wp_rewrite->pagination_base ) . get_query_var('paged'), 'archive' );
  452. }
  453. }
  454. echo '';
  455. }
  456. add_action('wp_head', 'cx_archive_link');
  459. $qmr_work_tags = array(
  461. 'the_content', 
  473. );
  474. foreach ( $qmr_work_tags as $qmr_work_tag ) {
  475. remove_filter ($qmr_work_tag, 'wptexturize');
  476. }
  479. function baw_no_admin_access() {
  480. if( !current_user_can( 'administrator' ) ) {
  481. wp_redirect( home_url() );
  482. die();
  483. }
  484. }
  485. add_action( 'admin_init', 'baw_no_admin_access', 1 );
  488. function mail_smtp( $phpmailer ){
  489. $phpmailer->From = '[email protected]'; 
  490. $phpmailer->FromName = '腾讯网'; 
  491. $phpmailer->Host = 'smtp.qq.com'; 
  492. $phpmailer->Port = '465'; 
  493. $phpmailer->SMTPSecure = 'ssl'; 
  494. $phpmailer->Username = '[email protected]'; 
  495. $phpmailer->Password = '0123456789'; 
  496. $phpmailer->IsSMTP(); 
  497. $phpmailer->SMTPAuth = true; 
  498. }
  499. add_action('phpmailer_init','mail_smtp');

WordPress程序/functions.php收集整理的各种自定义优化代码分享

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