mirror of
https://github.com/yunluo/gdk.git
synced 2024-06-20 06:25:13 +02:00
277 lines
9 KiB
PHP
277 lines
9 KiB
PHP
<?php
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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 $link;
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}
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}
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if (isset($others_seo['baidu_submit']) && $others_seo['baidu_submit']) {
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add_action('post_updated', 'nc_baidu_submit');
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function nc_baidu_submit($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 = $others_seo['baidu_submit_key'];
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if (empty($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, $options);
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}
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}
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function nc_baidu_auto_code(){
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echo '<script>
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(function(){
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var bp = document.createElement(\'script\');
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bp.src = \'https://zz.bdstatic.com/linksubmit/push.js\';
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var s = document.getElementsByTagName("script")[0];
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s.parentNode.insertBefore(bp, s);
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})();
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</script>';
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}
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}
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add_action('wp_footer', 'nc_baidu_auto_code', 500);
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if(gdk_option('gdk_seo_img')) {
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//给文章图片自动添加alt和title信息
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function nc_imagesalt($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 $content;
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}
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add_filter('the_content', 'nc_image_alt_tag', 99999);
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}
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//给外部链接加上跳转
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function git_go_url($content){
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preg_match_all('/<a(.*?)href="(.*?)"(.*?)>/', $content, $matches);
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if ($matches && !is_page('about')) {
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foreach ($matches[2] as $val) {
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if (strpos($val, '://') !== false && strpos($val, home_url()) === false && !preg_match('/\\.(jpg|jpeg|png|ico|bmp|gif|tiff)/i', $val)) {
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$content = str_replace("href=\"{$val}\"", "href=\"" . get_permalink(git_page_id('go')) . "?url={$val}\" ", $content);
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}
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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', 'git_go_url', 999);
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//关键字
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function 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', 'deel_keywords');
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//网站描述
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function 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', '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 canonical_for_git(){
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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', 'canonical_for_git'); |