wordPress/ target=_blank class=infotextkey>WordPress有一個缺點，它不能自動智能地添加標簽。那么下面介紹的功能是自動添加標簽和內部鏈的功能代碼。只需要將代碼復制到主題functions.php文件中，這個功能就可以實現了。
主題functions.php文件添加如下代碼：
/* 自動為文章內的標簽添加內鏈開始 */
$match_num_from = 1; //一篇文章中同一個標簽少于幾次不自動鏈接
$match_num_to = 1; //一篇文章中同一個標簽最多自動鏈接幾次
function tag_sort($a, $b){
if ( $a->name == $b->name ) return 0;
return ( strlen($a->name) > strlen($b->name) ) ? -1 : 1;
}
function tag_link($content){
global $match_num_from,$match_num_to;
$posttags = get_the_tags();
if ($posttags) {
usort($posttags, "tag_sort");
foreach($posttags as $tag) {
$link = get_tag_link($tag->term_id);
$keyword = $tag->name;
$cleankeyword = stripslashes($keyword);
$url = "<a href="$link" title="".str_replace('%s',addcslashes($cleankeyword, '$'),__('【查看含有[%s]標簽的文章】')).""";
$url .= ' target="_blank"';
$url .= ">".addcslashes($cleankeyword, '$')."</a>";
$limit = rand($match_num_from,$match_num_to);
$content = preg_replace( '|(<a[^>]+>)(.*)('.$ex_word.')(.*)(</a[^>]*>)|U'.$case, '$1$2%&&&&&%$4$5', $content);
$content = preg_replace( '|(<img)(.*?)('.$ex_word.')(.*?)(>)|U'.$case, '$1$2%&&&&&%$4$5', $content);
$cleankeyword = preg_quote($cleankeyword,''');
$regEx = ''(?!((<.*?)|(<a.*?)))('. $cleankeyword . ')(?!(([^<>]*?)>)|([^>]*?</a>))'s' . $case;
$content = preg_replace($regEx,$url,$content,$limit);
$content = str_replace( '%&&&&&%', stripslashes($ex_word), $content);
}
}
return $content;
}
add_filter('the_content','tag_link',1);
/* 自動為文章內的標簽添加內鏈結束 */
