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<?php |
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/* |
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Name: 简单 SEO |
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URI: https://mp.weixin.qq.com/s/LzGWzKCEl5SdJCQdBvFipg |
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Description: 简单 SEO 扩展实现最简单快捷的方式设置 WordPress 站点的 SEO。 |
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Version: 2.0 |
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*/ |
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class WPJAM_SEO{ |
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public static function __callStatic($method, $args){ |
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return wpjam_call_option(static::class, $method, ...$args); |
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} |
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|
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public static function get_fields(){ |
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if(file_exists(ABSPATH.'robots.txt')){ |
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$robots_field = ['type'=>'view', 'value'=>'博客的根目录下已经有 robots.txt 文件。<br />请直接编辑或� |
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删除之后在后台自定义。']; |
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}else{ |
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$site_url = parse_url(site_url()); |
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$path = !empty($site_url['path']) ? $site_url['path'] : ''; |
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$robots = wpjam_remove_pre_tab("User-agent: * |
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Disallow: /wp-admin/ |
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Disallow: /wp-includes/ |
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Disallow: /cgi-bin/ |
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Disallow: $path/wp-content/plugins/ |
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Disallow: $path/wp-content/themes/ |
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Disallow: $path/wp-content/cache/ |
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Disallow: $path/author/ |
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Disallow: $path/trackback/ |
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Disallow: $path/feed/ |
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Disallow: $path/comments/ |
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Disallow: $path/search/", 3); |
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|
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$robots_field = ['type'=>'textarea', 'value'=>$robots]; |
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} |
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|
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if(file_exists(ABSPATH.'sitemap.xml')){ |
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$wpjam_sitemap = '博客的根目录下已经有 sitemap.xml 文件。<br />删除之后才能使用插件自动生成的 sitemap.xml。'; |
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}else{ |
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$wpjam_sitemap = '首页/分类/标签：<a href="'.home_url('/sitemap.xml').'" target="_blank">'.home_url('/sitemap.xml').'</a> |
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<br />前1000篇文章：<a href="'.home_url('/sitemap-1.xml').'" target="_blank">'.home_url('/sitemap-1.xml').'</a> |
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<br />1000-2000篇文章：<a href="'.home_url('/sitemap-2.xml').'" target="_blank">'.home_url('/sitemap-2.xml').'</a> |
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<br />以此类推...'; |
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} |
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|
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$wp_sitemap = 'sitemap 地址：<a href="'.home_url('/wp-sitemap.xml').'" target="_blank">'.home_url('/wp-sitemap.xml').'</a>'; |
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|
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return [ |
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'home_set' => ['title'=>'首页设置', 'type'=>'fieldset', 'wrap_tag'=>'fieldset', 'fields'=>[ |
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'home_title' => ['title'=>'标题：', 'class'=>'regular-text, expandable', 'placeholder'=>'不填则使用标题'], |
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'home_description' => ['title'=>'描述：', 'type'=>'textarea'], |
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'home_keywords' => ['title'=>'� |
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�键字：', 'class'=>'regular-text, expandable'], |
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]], |
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'post_set' => ['title'=>'文章和分类页', 'type'=>'fieldset', 'group'=>true, 'fields'=>[ |
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'individual' => ['type'=>'select', 'options'=>['0'=>'自动获取摘要和� |
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�键字', '1'=>[ |
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'label' => '单独设置 SEO TDK', |
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'fields' => ['list_table'=>['value'=>1, 'options'=>['1'=>'编辑和列表页都可设置', '0'=>'� |
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可在编辑页设置', 'only'=>'� |
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可在列表页设置']]] |
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]]], |
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], 'description' => ['文章摘要作为页面的 Meta Description，文章的标签作为页面的 Meta Keywords。<br />分类和标签的描述作为页面的 Meta Description，页面没有 Meta Keywords。', ['show_if'=>['individual', 0]]]], |
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'unique' => ['title'=>'确保生成并唯一', 'label'=>'如果当前主题或� |
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�他插件也会生成摘要和� |
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�键字，或当前主题不标准，可以通过勾选该选项「确保生成并唯一」。'], |
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'robots' => ['title'=>'robots.txt']+$robots_field, |
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'sitemap' => ['title'=>'Sitemap', 'options'=>[0=>['label'=>'使用 WPJAM 生成的','description'=>$wpjam_sitemap], 'wp'=>['label'=>'使用 WordPress � |
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置的','description'=>$wp_sitemap]]] |
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]; |
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} |
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|
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public static function get_value($type='title'){ |
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if($type == 'meta'){ |
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return wpjam_fill(['description', 'keywords'], fn($k)=> self::get_value($k)); |
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} |
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|
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if(is_front_page()){ |
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if(get_query_var('paged') < 2){ |
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$value = self::get_setting('home_'.$type); |
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} |
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}elseif(is_tag() || is_category() || is_tax()){ |
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if(get_query_var('paged') < 2){ |
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if(self::get_setting('individual')){ |
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$value = get_term_meta(get_queried_object_id(), 'seo_'.$type, true); |
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} |
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|
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if(empty($value) && $type == 'description'){ |
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$value = term_description(); |
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} |
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} |
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}elseif(is_singular()){ |
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if(self::get_setting('individual')){ |
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$value = get_post_meta(get_the_ID(), 'seo_'.$type, true); |
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} |
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|
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if(empty($value)){ |
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if($type == 'description'){ |
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$value = get_the_excerpt(); |
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}elseif($type == 'keywords'){ |
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$value = ($tags = get_the_tags()) ? implode(',', wp_list_pluck($tags, 'name')) : ''; |
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} |
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} |
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} |
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|
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if(!empty($value)){ |
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$value = wp_strip_all_tags($value, true); |
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|
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return $type == 'title' ? esc_textarea($value) : "<meta name='{$type}' content='".esc_attr($value)."' />\n"; |
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} |
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} |
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|
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public static function get_rewrite_rule(){ |
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return [ |
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['sitemap\.xml?$', 'index.php?module=sitemap', 'top'], |
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['sitemap-(.*?)\.xml?$', 'index.php?module=sitemap&action=$matches[1]', 'top'], |
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]; |
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} |
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|
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public static function redirect($action){ |
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if(!$action){ |
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$items = array_merge([[home_url(), str_replace(' ', 'T', get_lastpostmodified('GMT')).'+00:00', 'daily', '1.0']], get_terms(['taxonomy'=>array_diff(array_keys(get_taxonomies(['public' => true])), ['post_format'])])); |
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}elseif(is_numeric($action)){ |
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$items = wpjam_get_posts(['posts_per_page'=>1000, 'paged'=>$action, 'post_type'=>array_diff(array_keys(get_post_types(['public' => true])), ['page', 'attachment'])]); |
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}else{ |
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$sitemap = apply_filters('wpjam_'.$action.'_sitemap', ''); |
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} |
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|
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$sitemap ??= implode(wpjam_map($items, function($item){ |
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if(is_a($item, 'WP_Post')){ |
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$item = [get_permalink($item->ID), str_replace(' ', 'T', $item->post_modified_gmt).'+00:00', 'weekly', 0.8]; |
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}elseif(is_a($item, 'WP_Term')){ |
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$item = [get_term_link($item), str_replace(' ', 'T', get_lastpostmodified('GMT')).'+00:00', 'daily', $item->taxonomy == 'category' ? 0.6 : 0.4]; |
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} |
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|
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return "\t<url>\n".implode(wpjam_map(['loc', 'lastmod', 'changefreq', 'priority'], fn($k, $i)=> "\t\t<{$k}>{$item[$i]}</{$k}>\n"))."\t</url>\n"; |
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})); |
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|
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header("Content-Type:text/xml"); |
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|
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echo '<?xml version="1.0" encoding="UTF-8"?> |
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<?xml-stylesheet type="text/xsl" href="'.(new WP_Sitemaps_Renderer())->get_sitemap_stylesheet_url().'"?> |
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<!-- generated-on="'.date('d. F Y').'" --> |
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<urlset xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd" xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">'."\n".$sitemap."\n".'</urlset>'."\n"; |
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|
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exit; |
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} |
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|
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public static function filter_html($html){ |
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$title = self::get_value('title'); |
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$title = $title ? '<title>'.$title.'</title>' : ''; |
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|
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if($meta = self::get_value('meta')){ |
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$title = ($title ?: '\1')."\n".implode($meta); |
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$html = wpjam_preg_replace('#<meta\s+name=([\'"])('.implode('|', array_keys($meta)).')\1(.*?)\/>#is', '', $html); |
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} |
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|
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return $title ? wpjam_preg_replace('#(<title>[^<]*<\/title>)#is', $title, $html) : $html; |
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} |
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|
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public static function add_hooks(){ |
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if(self::get_setting('unique')){ |
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add_filter('wpjam_html', [self::class, 'filter_html']); |
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}else{ |
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wpjam_hook('wp_head', 'echo', fn()=> implode(self::get_value('meta'))); |
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} |
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|
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wpjam_hook('robots_txt', '.', fn($public)=> $public ? self::get_setting('robots') : '', 10, 2); |
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add_filter('document_title', fn($title)=> self::get_value('title') ?: $title); |
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|
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self::get_setting('sitemap') || wpjam_route('sitemap', self::class); |
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|
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if(self::get_setting('individual')){ |
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wpjam_map([ |
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'post' => ['context'=>'side', 'post_type'=>fn($v)=> $v != 'attachment' && is_post_type_viewable($v)], |
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'term' => ['action'=>'edit', 'taxonomy'=>fn($v)=> is_taxonomy_viewable($v)] |
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], fn($v, $t)=> wpjam_register_meta_option($t, 'seo', $v+[ |
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'title' => 'SEO设置', |
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'page_title' => 'SEO设置', |
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'submit_text' => '设置', |
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'list_table' => self::get_setting('list_table', 1), |
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'fields' => [ |
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'seo_description' => ['title'=>'SEO描述', 'class'=>'large-text', 'default'=>'', 'type'=>'textarea'], |
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'seo_keywords' => ['title'=>'SEO� |
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�键字','class'=>'large-text', 'default'=>''] |
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] |
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])); |
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} |
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} |
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} |
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|
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wpjam_register_option('wpjam-seo', [ |
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'title' => 'SEO设置', |
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'model' => 'WPJAM_SEO', |
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'plugin_page' => 'wpjam-seo', |
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'current_tab' => 'seo', |
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'menu_page' => ['tab_slug'=>'seo', 'order'=>20, 'summary'=>__FILE__] |
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]); |
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|
