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WordPress通过非插件方式实现SEO优化图文教程
来源：互联网 | 时间：2016-06-07 09:35:32 | 阅读：160 |
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WordPress有很多SEO插件来帮助进行搜索引擎优化。如果你不想使用插件，下面这个高效的代码，将使你的博客对搜索引擎更加友好。
将下面代码粘贴到你的functions.php文件：
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function basic_wp_seo() {
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global $page, $paged, $post;
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$default_keywords = 'wordpress, plugins, themes, design, dev, development, security, htaccess, apache, php, sql, html, css, jquery, javascript, tutorials'; // customize
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$output = '';
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// description
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$seo_desc = get_post_meta($post->ID, 'mm_seo_desc', true);
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$description = get_bloginfo('description', 'display');
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$pagedata = get_post($post->ID);
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if (is_singular()) {
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if (!empty($seo_desc)) {
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$content = $seo_desc;
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} else if (!empty($pagedata)) {
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$content = apply_filters('the_excerpt_rss', $pagedata->post_content);
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$content = substr(trim(strip_tags($content)), 0, 155);
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$content = preg_replace('#n#', ' ', $content);
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$content = preg_replace('#s{2,}#', ' ', $content);
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$content = trim($content);
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}
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} else {
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$content = $description;
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}
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$output .= '' . "n";
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// keywords
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$keys = get_post_meta($post->ID, 'mm_seo_keywords', true);
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$cats = get_the_category();
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$tags = get_the_tags();
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if (empty($keys)) {
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if (!empty($cats)) foreach($cats as $cat) $keys .= $cat->name . ', ';
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if (!empty($tags)) foreach($tags as $tag) $keys .= $tag->name . ', ';
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$keys .= $default_keywords;
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}
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$output .= "tt" . '' . "n";
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// robots
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if (is_category() || is_tag()) {
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$paged = (get_query_var('paged')) ? get_query_var('paged') : 1;
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if ($paged > 1) {
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$output .= "tt" . '' . "n";
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} else {
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$output .= "tt" . '' . "n";
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}
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} else if (is_home() || is_singular()) {
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$output .= "tt" . '' . "n";
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} else {
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$output .= "tt" . '' . "n";
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}
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// title
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$title_custom = get_post_meta($post->ID, 'mm_seo_title', true);
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$url = ltrim(esc_url($_SERVER['REQUEST_URI']), '/');
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$name = get_bloginfo('name', 'display');
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$title = trim(wp_title('', false));
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$cat = single_cat_title('', false);
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$tag = single_tag_title('', false);
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$search = get_search_query();
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if (!empty($title_custom)) $title = $title_custom;
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if ($paged >= 2 || $page >= 2) $page_number = ' | ' . sprintf('Page %s', max($paged, $page));
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else $page_number = '';
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if (is_home() || is_front_page()) $seo_title = $name . ' | ' . $description;
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elseif (is_singular()) $seo_title = $title . ' | ' . $name;
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elseif (is_tag()) $seo_title = 'Tag Archive: ' . $tag . ' | ' . $name;
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elseif (is_category()) $seo_title = 'Category Archive: ' . $cat . ' | ' . $name;
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elseif (is_archive()) $seo_title = 'Archive: ' . $title . ' | ' . $name;
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elseif (is_search()) $seo_title = 'Search: ' . $search . ' | ' . $name;
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elseif (is_404()) $seo_title = '404 - Not Found: ' . $url . ' | ' . $name;
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else $seo_title = $name . ' | ' . $description;
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$output .= "tt" . '' . esc_attr($seo_title . $page_number) . '' . "n";
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return $output;
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}
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