request( $api_url); $result = $result['body']; $result = json_decode($result); return $result[0]->url_short; } function get_post_t_cn($post_ID){ $t_cn = get_post_meta($post_ID, 't.cn', true); if(!$t_cn) { $long_url = get_permalink($post_ID); $t_cn = get_t_cn($long_url); add_post_meta($post_ID, 't.cn', $t_cn, true); } return $t_cn; } add_action('publish_post', 'publish_post_2_microblog', 0); function publish_post_2_microblog($post_ID){ get_post_t_cn($post_ID); } add_filter('the_content','t_cn_content'); function t_cn_content($text){ if(is_single()||is_page()||is_feed()) { global $post; $t_cn = get_post_t_cn($post->ID); $text = $text . '

这篇日志的 t.cn 短域名为：'.$t_cn .'。

'; } return $text; }