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