Typecho implements the automatic addition of nofollow tags to external links

From the perspective of SEO, we will set nofollow tags on external links to reduce the transmission separation of weights. Here, how can we implement it in the typecho program?

Open the var/HyperDown.php file in the directory of typecho and find the 386 line, such as the following code:

 $text = preg_replace_callback("/\[((?:[^\]]|\\\\\]|\\\\\[)+?)\]\(((?:[^\)]|\\\\\)|\\\\\()+?)\)/", function ($matches) use ($self) { $escaped = $self->parseInline( $self->escapeBracket($matches[1]),  '',  false, false); $url = $self->escapeBracket($matches[2]); $url = $self->cleanUrl($url); return $self->makeHolder("<a href=\"{$url}\">{$escaped}</a>"); }, $text );

Put:

 return $self->makeHolder("<a href=\"{$url}\">{$escaped}</a>");

Replace with:

 if (strstr($url,'//www.laozuo.org') == false ) { return $self->makeHolder("<a href=\"{$url}\" target=\"_blank\" rel=\"nofollow\">{$escaped}</a>"); } else { return $self->makeHolder("<a href=\"{$url}\" target=\"_blank\">{$escaped}</a>"); }