文章中自动添加关键词链接，协助收录内页优化

平常在写文章的时候，会在发布前你会设置很多标签，比如源码，网页模板，美化等等，这些关键词，往往需要搜索才能找到，站长这里给大家分享这个是只要你的文章中包含了你网站的关键词，就会自动添加超链接，也是更好的协助网站收录优化，提高内页收录

1.将下面的 PHP 代码加入到主题目录下：themes/zibll/functions.php 文件中。其他主题设置同理

//文章添加关键词链接开始
function wpkj_auto_add_tag_link($content){
$limit = 1; // 设置同一个标签添加几次链接
$posttags = get_the_tags();
if ($posttags) {
foreach($posttags as $tag) {
$link = get_tag_link($tag->term_id);
$keyword = $tag->name;
$cleankeyword = stripslashes($keyword);
$url = '<a target="_blank" href="'.$link.'" title="'.str_replace('%s', addcslashes($cleankeyword, '$'), __('View all posts in %s')).'">'.addcslashes($cleankeyword, '$').'</a>';
$regEx = '\'(?!((<.*?)|(<a.*?)))('. $cleankeyword . ')(?!(([^<>]*?)>)|([^>]*?</a>))\'s';
$content = preg_replace($regEx,$url,$content,$limit);
}
}
return $content;
}
add_filter( 'the_content', 'wpkj_auto_add_tag_link', 1 );  
//文章添加关键词链接结束
//文章添加关键词链接开始
function wpkj_auto_add_tag_link($content){
$limit = 1; // 设置同一个标签添加几次链接
$posttags = get_the_tags();
if ($posttags) {
foreach($posttags as $tag) {
$link = get_tag_link($tag->term_id);
$keyword = $tag->name;
$cleankeyword = stripslashes($keyword);
$url = '<a target="_blank" href="'.$link.'" title="'.str_replace('%s', addcslashes($cleankeyword, '$'), __('View all posts in %s')).'">'.addcslashes($cleankeyword, '$').'</a>';
$regEx = '\'(?!((<.*?)|(<a.*?)))('. $cleankeyword . ')(?!(([^<>]*?)>)|([^>]*?</a>))\'s';
$content = preg_replace($regEx,$url,$content,$limit);
}
}
return $content;
}
add_filter( 'the_content', 'wpkj_auto_add_tag_link', 1 );  
//文章添加关键词链接结束
//文章添加关键词链接开始
function wpkj_auto_add_tag_link($content){
$limit = 1; // 设置同一个标签添加几次链接
$posttags = get_the_tags();
if ($posttags) {
foreach($posttags as $tag) {
$link = get_tag_link($tag->term_id);
$keyword = $tag->name;
$cleankeyword = stripslashes($keyword);
$url = '<a target="_blank" href="'.$link.'" title="'.str_replace('%s', addcslashes($cleankeyword, '$'), __('View all posts in %s')).'">'.addcslashes($cleankeyword, '$').'</a>';
$regEx = '\'(?!((<.*?)|(<a.*?)))('. $cleankeyword . ')(?!(([^<>]*?)>)|([^>]*?</a>))\'s';
$content = preg_replace($regEx,$url,$content,$limit);
}
}
return $content;
}
add_filter( 'the_content', 'wpkj_auto_add_tag_link', 1 );  
//文章添加关键词链接结束