对于网站引用了太多的外部连接,权重会受影响,很多站长都比较在意这个细节,下面给出几种方案:
站外连接添加nofollow
function external_nofollow($content){
preg_match_all('|href="(.*?)"|',$content,$matches);
if($matches){
foreach($matches[1] as $val){
if( strpos($val,home_url())===false ) $content=str_replace("href="$val"", "href="$val" rel="external nofollow" ",$content);
}
}
return $content;
}
add_filter('the_content','external_nofollow',999);
分类添加nofollow
function crunchify_nofollow_cat($text) {
global $post;
if( in_category(1) ) { // YOUR CATEGORY ID HERE 可变
$text = stripslashes(wp_rel_nofollow($text));
}
return $text;
}
add_filter('the_content', 'crunchify_nofollow_cat');
标签添加nofollow
function nofollow_cat_posts($text) {
global $post;
if( has_tag(1) ) { // SET TAG ID HERE 可变
$text = stripslashes(wp_rel_nofollow($text));
}
return $text;
}
add_filter('the_content', 'nofollow_cat_posts');
放functions.php里,效果就是给连接加上了rel="nofollow"。

