* @license GPL-3.0 License
* @version 2023.04.05
*/
// 标题配置
function title($title, $sep)
{
global $paged, $page;
if (is_feed()) {
return $title;
}
$title .= get_bloginfo('name');
$site_description = get_bloginfo('description', 'display');
if ($site_description && (is_home() || is_front_page())) {
$title = "{$title} {$sep} {$site_description}";
}
if ($paged >= 2 || $page >= 2) {
$title = "{$title} {$sep} " . sprintf(__('第 %s 页', 'kratos'), max($paged, $page));
}
return $title;
}
add_filter('wp_title', 'title', 10, 2);
// Keywords 配置
function keywords()
{
global $post;
$keywords = '';
if (is_home()) {
$keywords = kratos_option('seo_keywords');
} elseif (is_single()) {
$keywords = get_post_meta($post->ID, "seo_keywords_value", true);
if ($keywords == '') {
$tags = wp_get_post_tags($post->ID);
foreach ($tags as $tag) {
$keywords = $keywords . $tag->name . ",";
}
$keywords = rtrim($keywords, ',');
}
} elseif (is_page()) {
$keywords = get_post_meta($post->ID, "seo_keywords_value", true);
if ($keywords == '') {
$keywords = kratos_option('seo_keywords');
}
} else {
$keywords = single_tag_title('', false);
}
return trim(esc_attr(strip_tags($keywords)));
}
// Description 配置
function description()
{
global $post;
$description = '';
if (is_home()) {
$description = kratos_option('seo_description');
} elseif (is_single()) {
$description = get_post_meta($post->ID, "seo_description_value", true);
if ($description == '') {
$description = get_the_excerpt();
}
if ($description == '') {
$description = str_replace("\n", "", mb_strimwidth(strip_tags($post->post_content), 0, 200, "…", 'utf-8'));
}
} elseif (is_category()) {
$description = category_description();
} elseif (is_tag()) {
$description = tag_description();
} elseif (is_page()) {
$description = get_post_meta($post->ID, "seo_description_value", true);
if ($description == '') {
$description = kratos_option('seo_description');
}
}
return trim(esc_attr(strip_tags($description)));
}
// robots.txt 配置
add_filter('robots_txt', function ($output, $public) {
if ('0' == $public) {
return "User-agent: *\nDisallow: /\n";
} else {
if (!empty(kratos_option('seo_robots_fieldset')['seo_robots'])) {
$output = esc_attr(strip_tags(kratos_option('seo_robots_fieldset')['seo_robots']));
}
return $output;
}
}, 10, 2);
// 哀悼黑白站点
function mourning()
{
if (is_home() && kratos_option('g_rip', false)) {
echo '';
}
}
// 抓取图片链接（搜索引擎或者社交工具分享时抓取图片的链接）
function share_thumbnail_url()
{
global $post;
if (!is_object($post))
return;
if (has_post_thumbnail($post->ID)) {
$post_thumbnail_id = get_post_thumbnail_id($post);
// Return array|false Array of image data, or boolean false if no image is available.
$img = wp_get_attachment_image_src($post_thumbnail_id, 'full');
$img && $img = $img[0];
} else {
$content = $post->post_content;
preg_match_all('//sim', $content, $strResult, PREG_PATTERN_ORDER);
if (!empty($strResult[1])) {
$img = $strResult[1][0];
} else {
$img = kratos_option('seo_shareimg', ASSET_PATH . '/assets/img/default.jpg');
}
}
return $img;
}
// 支持上传 svg
add_filter('upload_mimes', 'upload_svg');
function upload_svg($existing_mimes = array())
{
$existing_mimes['svg'] = 'image/svg+xml';
return $existing_mimes;
}