我們在編寫文章時,經常需要添加一些標簽關鍵詞的鏈接,這樣不僅可以優化我們的內鏈,對用戶來說也可以參照相關的文章,如果對文章的關鍵字進行手動添加鏈接,那樣對我們來說太麻煩了,而且在標簽關鍵詞很多的情況下我們是記不住的,今天就向大家介紹如何讓我們的wordpress文章自動添加標簽關鍵詞的鏈接:
打開我們主題的functions.php文件添加如下代碼:
//連接數量
$match_num_from = 1; //一個關鍵字少於多少不替換
$match_num_to = 10; //一個關鍵字最多替換
//連接到WordPress的模塊
add_filter('the_content','tag_link',1);
//按長度排序
function tag_sort($a, $b){
if ( $a->name == $b->name ) return 0;
return ( strlen($a->name) > strlen($b->name) ) ? -1 : 1;
}
//改變標簽關鍵字
function tag_link($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;
//連接代碼
$cleankeyword = stripslashes($keyword);
$url = "<a href=\"$link\" title=\"".str_replace('%s',addcslashes($cleankeyword, '$'),__('View all posts in %s'))."\"";
$url .= ' target="_blank"';
$url .= ">".addcslashes($cleankeyword, '$')."</a>";
$limit = rand($match_num_from,$match_num_to);
//不連接的代碼
$content = preg_replace( '|(<a[^>]+>)(.*)('.$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;
}
