WordPress 自动为文章添加已使用过的标签(文章内容版本)
add_action('save_post', 'auto_add_tags');
function auto_add_tags(){
$tags = get_tags( array('hide_empty' => false) );
$post_id = get_the_ID();
$post_content = get_post($post_id)->post_content;
if ($tags) {
foreach ( $tags as $tag ) {
// 如果文章内容出现了已使用过的标签,自动添加这些标签
if ( strpos($post_content, $tag->name) !== false)
wp_set_post_tags( $post_id, $tag->name, true );
}
}
}
WordPress 自动为文章添加已使用过的标签(文章标题版本)
add_action('save_post', 'auto_add_title_tags');
function auto_add_title_tags(){
$tags = get_tags( array('hide_empty' => false) );
$post_id = get_the_ID();
$post_title = get_post($post_id)->post_title;
if ($tags) {
foreach ( $tags as $tag ) {
// 如果文章标题出现了已使用过的标签,自动添加这些标签
if ( strpos($post_title, $tag->name) !== false)
wp_set_post_tags( $post_id, $tag->name, true );
}
}
}
自动为文章添加标签内链(大小写不敏感)
/**
* 自动为文章内的标签添加内链(大小写不敏感)
*/
//连接数量
$match_num_from = 1; //一个关键字少于多少不替换
$match_num_to = 1; //一个关键字最多替换
//按长度排序
function tag_sort($a, $b){
if ( $a->name == $b->name ) return 0;
return ( strlen($a->name) > strlen($b->name) ) ? -1 : 1;
}
//改变标签关键字
function tag_link($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;
//将大小写强行更改为标签的大小写
$content = str_ireplace(urldecode($tag->slug), $tag->name, $content);
//连接代码
$cleankeyword = stripslashes($keyword);
$url = "";
$limit = rand($match_num_from,$match_num_to);
//不连接的代码
$content = preg_replace( '|(]+>)(.*)('.$ex_word.')(.*)(]*>)|U'.$case, '$1$2%&&&&&%$4$5', $content);
$content = preg_replace( '|()|U'.$case, '$1$2%&&&&&%$4$5', $content);
$cleankeyword = preg_quote($cleankeyword,'\'');
$regEx = '\'(?!((<.*?)|(
$content = preg_replace($regEx,$url,$content,$limit);
$content = str_replace( '%&&&&&%', stripslashes($ex_word),$content);
}
}
return $content;
}
//连接到WordPress的模块
add_filter('the_content','tag_link',1);