/**
* WordPress发布文章同步到新浪微博（带图片&自定义栏目版）
* 文章地址：http://zhangge.net/4947.html
*/
function post_to_sina_weibo($post_ID) {

if (wp_is_post_revision($post_ID)) return;//修订版本(更新)不发微博

$get_post_info = get_post($post_ID);
$get_post_content = get_post($post_ID)->post_content;
$get_post_title = get_post($post_ID)->post_title;
if ($get_post_info->post_status == 'publish' && $_POST['original_post_status'] != 'publish') {
$appkey=你key';
$username='你账号';
$userpassword='你密码';
$request = new WP_Http;
$keywords = "";

/* 获取文章标签关键词 */
$tags = wp_get_post_tags($post_ID);
foreach ($tags as $tag ) {
$keywords = $keywords.'#'.$tag->name."#";
}

/* 修改了下风格，并添加文章关键词作为微博话题，提高与其他相关微博的关联率 */
$string1 = '【'.strip_tags( $get_post_title ).'】';
$string2 = $keywords.' 查看全文：'.get_permalink($post_ID);

/* 微博字数控制，避免超标同步失败 */
$status = $string1.mb_strimwidth(strip_tags( apply_filters('the_content', $get_post_content)),0, 90,'...').$string2;

/* 获取特色图片，如果没设置就抓取文章第一张图片 */
$url = get_mypost_thumbnail($post_ID);

/* 判断是否存在图片，定义不同的接口 */
if(!empty($url)){
$api_url = 'https://api.weibo.com/2/statuses/upload_url_text.json'; /* 新的API接口地址 */
$body = array('status' => $status,'source' => $appkey,'url' => $url);
} else {
$api_url = 'https://api.weibo.com/2/statuses/update.json';
$body = array('status' => $status,'source' => $appkey);
}
$headers = array('Authorization' => 'Basic ' . base64_encode("$username:$userpassword"));
$result = $request->post($api_url, array('body' => $body,'headers' => $headers));

}
}
add_action('publish_post', 'post_to_sina_weibo', 0);

/**
* WordPress 获取文章图片加强版 By 张戈博客
*/
if(!function_exists('get_mypost_thumbnail')){
function get_mypost_thumbnail($post_ID){
if (has_post_thumbnail()) {
$timthumb_src = wp_get_attachment_image_src( get_post_thumbnail_id($post_ID), 'full' );
$url = $timthumb_src[0];
} else {
if(!$post_content){
$post = get_post($post_ID);
$post_content = $post->post_content;
}
preg_match_all('|<img.*?src=[\'"](.*?)[\'"].*?>|i', do_shortcode($post_content), $matches);
if( $matches && isset($matches[1]) && isset($matches[1][0]) ){
$url =  $matches[1][0];
}else{
$url =  '';
}
}
return $url;
}
}