mirror of
https://github.com/yunluo/gdk.git
synced 2024-05-20 15:16:40 +02:00
414 lines
14 KiB
PHP
414 lines
14 KiB
PHP
<?php
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add_theme_support('title-tag');
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if (!function_exists('nc_filter_document_title_separator')):
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add_filter('document_title_separator', 'nc_filter_document_title_separator', 10, 1);
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add_filter('document_title_parts', 'nc_filter_document_title_parts', 10, 1);
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add_action('wp_head', 'nc_seo_meta_action', 1);
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function nc_filter_document_title_separator($var)
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{
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$nc_option = get_option('nc_option');
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$option_sep = $nc_option['seo_divider'];
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$var = isset($option_sep) ? $option_sep : $var;
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return trim($var);
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};
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function nc_filter_document_title_parts($title)
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{
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$nc_option = get_option('nc_option');
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global $paged, $page, $post;
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$taxonomy_seo = $nc_option['taxonomy_seo'];
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$seo_index_inner = $nc_option['seo_index_inner'];
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if (is_home() || is_front_page()) {
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$title_home = $seo_index_inner['seo_index_title'];
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$title['title'] = (isset($title_home) && !empty($title_home)) ? $title_home : get_bloginfo('name');
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} elseif (is_single() || is_page()) {
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$post_title = get_post_meta($post->ID, 'seo_title', true);
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$title['title'] = (isset($post_title) && !empty($post_title)) ? $post_title : get_the_title($post->ID);
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} elseif ($taxonomy_seo && is_category()) {
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$term = get_queried_object();
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$title_category = get_term_meta($term->term_id, 'taxonomy_title', true);
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$title['title'] = (isset($title_category) && !empty($title_category)) ? $title_category : get_cat_name($term->term_id);
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} elseif ($taxonomy_seo && is_tag()) {
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$term = get_queried_object();
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$title_tag = get_term_meta($term->term_id, 'taxonomy_title', true);
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$title['title'] = (isset($title_tag) && !empty($title_tag)) ? $title_tag : single_tag_title('', false);
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} elseif ($taxonomy_seo && is_tax()) {
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$term = get_queried_object();
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$title_tag = get_term_meta($term->term_id, 'taxonomy_title', true);
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$title['title'] = (isset($title_tag) && !empty($title_tag)) ? $title_tag : single_tag_title('', false);
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} elseif (is_author() && ! is_post_type_archive()) {
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$author = get_queried_object();
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if ($author) {
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$title['title'] = $author->display_name;
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}
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} elseif (is_search()) {
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$title['title'] = "搜索结果：".get_query_var('s');
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} elseif (is_404()) {
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$title['title'] = __('Page not found');
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}
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return $title;
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};
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function nc_seo_meta_action()
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{
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$nc_option = get_option('nc_option');
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$pages = get_query_var('page');
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$taxonomy_seo = $nc_option['taxonomy_seo'];
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$seo_index_inner = $nc_option['seo_index_inner'];
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if ((is_single() || is_page()) && $pages < 2) {
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global $post;
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$post_keywords = get_post_meta($post->ID, 'seo_keywords', true);
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$post_desc = get_post_meta($post->ID, 'seo_description', true);
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if (empty($single_description_range) || is_numeric($single_description_range)) {
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$post_desc_num = 140;
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} else {
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$post_desc_num = $single_description_range;
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}
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$seo_manual_des = get_post_meta($post->ID, 'seo_manual_des', true);
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$seo_manual_keywords = get_post_meta($post->ID, 'seo_manual_keywords', true);
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$tag = '';
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$tags = get_the_tags();
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if ($tags) {
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foreach ($tags as $val) {
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$tag.=','.$val->name;
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}
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}
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$tag = ltrim($tag, ',');
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$key_meta = isset($post_keywords) ? $post_keywords : '';
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$des_meta = isset($post_desc) ? $post_desc : '';
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$pt = $post->post_excerpt ? $post->post_excerpt : preg_replace('/\s+/', '', strip_tags(apply_filters('the_content', $post->post_content)));
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$excerpt = mb_strimwidth($pt, 0, $post_desc_num, '', get_bloginfo('charset'));
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if ((empty($key_meta) || !$seo_manual_keywords) && isset($tag)) {
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$keywords = $tag;
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} else {
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$keywords = $key_meta;
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}
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if (empty($des_meta) || !$seo_manual_des) {
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$description = $excerpt;
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} else {
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$description = $des_meta;
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}
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if ($keywords) {
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echo '<meta name="keywords" content="'.$keywords.'" />';
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echo "\n";
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}
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if ($description) {
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echo '<meta name="description" content="'.esc_attr($description).'" />';
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echo "\n";
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}
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}
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if ((is_home() || is_front_page()) && !is_paged()) {
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$keywords = $seo_index_inner['seo_index_keywords'];
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$description = $seo_index_inner['seo_index_description'];
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if ($keywords) {
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echo '<meta name="keywords" content="'.$keywords.'" />';
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echo "\n";
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}
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if ($description) {
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echo '<meta name="description" content="'.esc_attr(stripslashes($description)).'" />';
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echo "\n";
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}
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}
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if ($taxonomy_seo && ((is_category() || is_tag() || is_tax('special')) && !is_paged())) {
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$term = get_queried_object();
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$keywords = get_term_meta($term->term_id, 'taxonomy_keywords', true);
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$description = get_term_meta($term->term_id, 'taxonomy_desc', true);
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if ($keywords) {
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echo '<meta name="keywords" content="'.$keywords.'" />';
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echo "\n";
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}
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if ($description) {
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echo '<meta name="description" content="'.esc_attr(stripslashes($description)).'" />';
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echo "\n";
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}
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}
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}
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endif;
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//加载网站地图xml
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if(gdk_option('gdk_sitemap_xml')){
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include('sitemap-xml.php');
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}
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// 屏蔽蜘蛛爬取作者页面
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if(gdk_option('gdk_no_author_page')){
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function gdk_no_author_page()
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{
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if (is_author()) {
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wp_no_robots();
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}
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}
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add_action('wp_head', 'gdk_no_author_page');
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}
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//robots.txt优化功能
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if(gdk_option('gdk_robots')){
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add_filter('robots_txt', 'gdk_robots_txt', 10, 2);
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function gdk_robots_txt($robotext)
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{
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if(gdk_option('gdk_sitemap_xml')){
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$sitemap = 'Sitemap: ' . home_url('/sitemap.xml');
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} else {
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$sitemap = '';
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}
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$robotext = "User-agent: *
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Disallow: /wp-admin/
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Disallow: /wp-content/plugins/
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Disallow: /wp-includes/
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Disallow: /*/trackback
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Disallow: /feed
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Disallow: /*/feed
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Disallow: /attachment/
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Disallow: /wp-content/themes/
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{$sitemap}";
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return $robotext;
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}
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}
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//文章自动内链
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if(gdk_option('gdk_tag_link')){
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function gdk_tag_link($content)
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{
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$post_tags = get_the_tags();
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if ($post_tags) {
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foreach ($post_tags as $tag) {
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$link = get_tag_link($tag->term_id);
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$keyword = $tag->name;
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$cleankeyword = stripslashes($keyword);
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$url = '<a target="_blank" href="'.$link.'" title="'.str_replace('%s', addcslashes($cleankeyword, '$'), '查看更多关于%s的文章').'">'.addcslashes($cleankeyword, '$').'</a>';
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$regEx = '\'(?!((<.*?)|(<a.*?)))('. $cleankeyword . ')(?!(([^<>]*?)>)|([^>]*?</a>))\'s';
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$content = preg_replace($regEx, $url, $content, gdk_option('gdk_tag_num') ?? 5);
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}
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}
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return $content;
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}
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add_filter('the_content', 'gdk_tag_link', 1);
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}
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// 自动添加nofloow
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if(gdk_option('gdk_nofollow')){
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add_filter('the_content', 'gdk_nofollow');
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add_filter('the_excerpt', 'gdk_nofollow');
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function gdk_nofollow($content)
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{
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return preg_replace_callback('/<a[^>]+/', 'gdk_nofollow_callback', $content);
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}
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function gdk_nofollow_callback($matches)
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{
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$link = $matches[0];
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$site_link = get_bloginfo('url');
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if (strpos($link, 'rel') === false) {
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$link = preg_replace("%(href=\S(?!$site_link))%i", 'rel="nofollow" $1', $link);
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} elseif (preg_match("%href=\S(?!$site_link)%i", $link)) {
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$link = preg_replace('/rel=\S(?!nofollow)\S*/i', 'rel="nofollow"', $link);
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}
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return $link;
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}
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}
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add_action('post_updated', 'nc_baidu_submit');
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function nc_baidu_submit($post_ID)
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{
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global $post;
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$bd_submit_site = get_bloginfo('url');
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$bd_submit_token = gdk_option('gdk_baidu_api');
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if (empty($post_ID) || empty($bd_submit_site) || empty($bd_submit_token)) {
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return;
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}
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$api = 'http://data.zz.baidu.com/urls?site='.$bd_submit_site.'&token='.$bd_submit_token;
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$status = $post->post_status;
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if ($status != '' && $status != 'publish') {
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$url = get_permalink($post_ID);
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$ch = curl_init();
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$options = array(
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CURLOPT_URL => $api,
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CURLOPT_POST => true,
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CURLOPT_RETURNTRANSFER => true,
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CURLOPT_POSTFIELDS => $url,
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CURLOPT_HTTPHEADER => array('Content-Type: text/plain')
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);
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curl_setopt_array($ch, $options);
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}
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}
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function nc_baidu_auto_code(){
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echo '<script>
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(function(){
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var bp = document.createElement(\'script\');
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var curProtocol = window.location.protocol.split(\':\')[0];
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if (curProtocol === \'https\') {
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bp.src = \'https://zz.bdstatic.com/linksubmit/push.js\';
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}
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else {
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bp.src = \'http://push.zhanzhang.baidu.com/push.js\';
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}
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var s = document.getElementsByTagName("script")[0];
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s.parentNode.insertBefore(bp, s);
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})();
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</script>';
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}
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add_action('wp_footer', 'nc_baidu_auto_code', 500);
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if(gdk_option('gdk_seo_img')) {
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//给文章图片自动添加alt和title信息
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function nc_imagesalt($content) {
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global $post;
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$pattern ="/<a(.*?)href=('|\")(.*?).(bmp|gif|jpeg|jpg|png)('|\")(.*?)>/i";
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$replacement = '<a$1href=$2$3.$4$5 alt="'.strip_tags($post->post_title).'" title="'.strip_tags($post->post_title).'"$6>';
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$content = preg_replace($pattern, $replacement, $content);
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return $content;
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}
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add_filter('the_content', 'nc_imagesalt');
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function nc_image_alt_tag($content) {
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global $post;
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preg_match_all('/<img (.*?)\/>/', $content, $images);
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if(!is_null($images)) {
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foreach($images[1] as $index => $value) {
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$new_img = str_replace('<img', '<img alt="'.strip_tags($post->post_title).'-'.get_option('blogname').'"', $images[0][$index]);
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$content = str_replace($images[0][$index], $new_img, $content);
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}
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}
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return $content;
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}
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add_filter('the_content', 'nc_image_alt_tag', 99999);
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}
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//关键字
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function gdk_deel_keywords() {
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global $s, $post;
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$keywords = '';
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if (is_single()) {
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if (get_the_tags($post->ID)) {
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foreach (get_the_tags($post->ID) as $tag) $keywords.= $tag->name . ', ';
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}
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foreach (get_the_category($post->ID) as $category) $keywords.= $category->cat_name . ', ';
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$keywords = substr_replace($keywords, '', -2);
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} elseif (is_home()) {
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//$keywords = git_get_option('git_keywords');
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} elseif (is_tag()) {
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$keywords = single_tag_title('', false);
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} elseif (is_category()) {
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$keywords = single_cat_title('', false);
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} elseif (is_search()) {
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$keywords = esc_html($s, 1);
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} else {
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$keywords = trim(wp_title('', false));
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}
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if ($keywords) {
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echo "<meta name=\"keywords\" content=\"$keywords\">\n";
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}
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}
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add_action('wp_head', 'gdk_deel_keywords');
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//网站描述
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function gdk_deel_description() {
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global $s, $post;
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$description = '';
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$blog_name = get_bloginfo('name');
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$iexcerpt = $post->post_excerpt;
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if (is_singular()) {
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if (!empty($iexcerpt)) {
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$text = $iexcerpt;
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} else {
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$text = strip_shortcodes($post->post_content);
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}
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$description = trim(str_replace(array(
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"\r\n",
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"\r",
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"\n",
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" ",
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" "
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) , " ", str_replace("\"", "'", strip_tags($text))));
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if (!($description)) $description = $blog_name . "-" . trim(wp_title('', false));
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} elseif (is_home()) {
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//$description = git_get_option('git_description'); // 首頁要自己加
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} elseif (is_tag()) {
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$description = $blog_name . "'" . single_tag_title('', false) . "'";
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} elseif (is_category()) {
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$description = trim(strip_tags(category_description()));
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} elseif (is_archive()) {
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$description = $blog_name . "'" . trim(wp_title('', false)) . "'";
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} elseif (is_search()) {
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$description = $blog_name . ": '" . esc_html($s, 1) . "' 的搜索結果";
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} else {
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$description = $blog_name . "'" . trim(wp_title('', false)) . "'";
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}
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$description = mb_substr($description, 0, 220, 'utf-8');
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echo "<meta name=\"description\" content=\"$description\">\n";
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}
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add_action('wp_head', 'gdk_deel_description');
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//图片img标签添加alt，title属性
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function imagesalt($content){
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global $post;
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$pattern = "/<img(.*?)src=('|\")(.*?).(bmp|gif|jpeg|jpg|png)('|\")(.*?)>/i";
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$replacement = '<img$1src=$2$3.$4$5 alt="' . $post->post_title . '" title="' . $post->post_title . '"$6>';
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$content = preg_replace($pattern, $replacement, $content);
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return $content;
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}
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add_filter('the_content', 'imagesalt');
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//图片A标签添加title属性
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function aimagesalt($content){
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global $post;
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$pattern = "/<a(.*?)href=('|\")(.*?).(bmp|gif|jpeg|jpg|png)('|\")(.*?)>/i";
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$replacement = '<a$1href=$2$3.$4$5 title="' . $post->post_title . '"$6>';
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$content = preg_replace($pattern, $replacement, $content);
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return $content;
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}
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add_filter('the_content', 'aimagesalt');
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//评论分页的seo处理
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function gdk_canonical(){
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global $post;
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if (get_query_var('paged') > 1) {
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echo "\n";
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echo "<link rel='canonical' href='";
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echo get_permalink($post->ID);
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echo "' />\n";
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echo "<meta name=\"robots\" content=\"noindex,follow\">";
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}
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}
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add_action('wp_head', 'gdk_canonical'); |