function add_nofollow_content($content) {
$content = preg_replace_callback(
'/<a[^>]*href=["|\']([^"|\']*)["|\'][^>]*>([^<]*)<\/a>/i',
function($m) {
if (strpos($m[1], "https://www.wmarsiv.com") === false && strpos($m[1], "https://www.wmarsiv.com") === false)
return '<a href="'.$m[1].'" rel="nofollow" target="_blank">'.$m[2].'</a>';
else
return '<a href="'.$m[1].'" target="_blank">'.$m[2].'</a>';
},
$content);
return $content;
}
add_filter('the_content', 'add_nofollow_content');