用代碼為wordpress頁面及文章的連結自動加上nofollow,優化wordpress的seo
現在我們也要讓頁面具有這樣的功能！
可以將代碼貼入主題的functions.php
[cc lang="php"]
//用代碼為wordpress頁面及文章的連結自動加上nofollow,優化wordpress的seo
add_filter( 'the_content', 'cn_nf_url_parse');
function cn_nf_url_parse( $content ) {
$regexp = "
]*href=("??)([^" >]*?)\1[^>]*>";
if(preg_match_all("/$regexp/siU", $content, $matches, PREG_SET_ORDER)) {
if( !empty($matches) ) {
$srcUrl = get_option('siteurl');
for ($i=0; $i < count($matches); $i++)
{
$tag = $matches[$i][0];
$tag2 = $matches[$i][0];
$url = $matches[$i][0];
$noFollow = '';
$pattern = '/targets*=s*"s*_blanks*"/';
preg_match($pattern, $tag2, $match, PREG_OFFSET_CAPTURE);
if( count($match) < 1 )
$noFollow .= ' target="_blank" ';
$pattern = '/rels*=s*"s*[n|d]ofollows*"/';
preg_match($pattern, $tag2, $match, PREG_OFFSET_CAPTURE);
if( count($match) < 1 )
$noFollow .= ' rel="nofollow" ';
$pos = strpos($url,$srcUrl);
if ($pos === false) {
$tag = rtrim ($tag,'>');
$tag .= $noFollow.'>';
$content = str_replace($tag2,$tag,$content);
}
}
}
}
$content = str_replace(']]>', ']]>', $content);
return $content;
}
[/cc]
