WordPress自动内链标签及自动内链关键字 WP优化教程

/* 自动为文章内的标签添加内链开始 */
$match_num_from = 1; //一篇文章中同一个标签少于几次不自动链接
$match_num_to = 1; //一篇文章中同一个标签最多自动链接几次
function tag_sort($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($cleankeyword, \'$\'),__(\'View all posts in %s\')).\"\\\"\";
$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);
/* 自动为文章内的标签添加内链结束 *