通过微博授权接入网站，让微博用户也可以在网站发表文章，评论。
大略的步骤可以看这里via@bigfa 将微博接入WordPress:微博授权登录

本篇是在其基础上进行拓展，获取微博用户的头像和微博链接。首先加入functions.php完整的代码，见注释

<?php
// via@ bigfa 
// url@ http://fatesinger.com/74619
function oauth_http($method,$header,$url,$data){
    $method = $method ? $method : 'get';
    if( $method == 'get') {
        $ch = curl_init ();
        curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
        curl_setopt ( $ch, CURLOPT_RETURNTRANSFER, TRUE );
        curl_setopt ( $ch, CURLOPT_URL, $url );
        $result = curl_exec ( $ch );
        curl_close ( $ch );
        return $result;

    } elseif ( $method == 'post' ) {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
        curl_setopt ( $ch, CURLOPT_RETURNTRANSFER, TRUE );
        curl_setopt ( $ch, CURLOPT_POST, TRUE );
        curl_setopt ( $ch, CURLOPT_POSTFIELDS, $data );
        curl_setopt ( $ch, CURLOPT_URL, $url );
        curl_setopt ( $ch, CURLOPT_SSL_VERIFYPEER, FALSE);
        $ret = curl_exec ( $ch );
        curl_close ( $ch );
        return $ret;

    }

}
// weibo
define('WB_APPID','');//appkey
define('WB_APPSECRET','');//appsecret
function weibo_oauth(){
    $code = $_GET['code'];
    $url = "https://api.weibo.com/oauth2/access_token";
    $data = "client_id=" . WB_APPID . "&client_secret=" . WB_APPSECRET . "&grant_type=authorization_code&redirect_uri=".urlencode (home_url())."&code=".$code;
    $output = json_decode(oauth_http('post',array(),$url,$data));
    $sina_access_token = $output->access_token;
    $sina_uid = $output->uid;
    if(empty($sina_uid)){
        wp_redirect(home_url('/?3'.$sina_uid));
        exit;
    }
    if(is_user_logged_in()){
        $this_user = wp_get_current_user();
        update_user_meta($this_user->ID ,"sina_uid",$sina_uid);
        update_user_meta($this_user->ID ,"sina_access_token",$sina_access_token);
        echo '<script>if( window.opener ) {window.opener.location.reload();
                        window.close();
                        }else{
                        window.location.reload()";
                        }</script>';
    }else{
        $user_weibo = get_users(array("meta_key "=>"sina_uid","meta_value"=>$sina_uid));
        if(is_wp_error($user_weibo) || !count($user_weibo)){
            $get_user_info = "https://api.weibo.com/2/users/show.json?uid=".$sina_uid."&access_token=".$sina_access_token;
            $data = file_get_contents( $get_user_info );
            $str  = json_decode($data , true);
            $username = $str['screen_name'];
            $login_name = wp_create_nonce($sina_uid);
            $random_password = wp_generate_password( $length=12, $include_standard_special_chars=false );
            $userdata=array(
                'user_login' => $login_name,
                'display_name' => $username,
                'user_pass' => $random_password,
                'nick_name' => $username
            );
            $user_id = wp_insert_user( $userdata );
            wp_signon(array("user_login"=>$login_name,"user_password"=>$random_password),false);
            update_user_meta($user_id ,"sina_uid",$sina_uid);
            update_user_meta($user_id ,"sina_access_token",$sina_access_token);
            echo '<script>if( window.opener ) {window.opener.location.reload();
                        window.close();
                        }else{
                        window.location.href = "'.home_url().'";
                        }</script>';

        }else{
            update_user_meta($user_weibo[0]->ID ,"sina_access_token",$sina_access_token);
            wp_set_auth_cookie($user_weibo[0]->ID);

            echo '<script>if( window.opener ) {window.opener.location.reload();
                        window.close();
                        }else{
                        window.location.href = "'.home_url().'";
                        }</script>';
        }
    }
}
// 授权链接
function weibo_oauth_url(){
    $url = 'https://api.weibo.com/oauth2/authorize?client_id=' . WB_APPID . '&response_type=code&redirect_uri=' . urlencode (home_url('/?type=sina'));
    return $url;
}

function social_oauth_weibo(){
    if (isset($_GET['code']) && isset($_GET['type']) && $_GET['type'] == 'sina'){
        weibo_oauth();
    }
}
add_action('init','social_oauth_weibo');

// via@ INLOJV微博用户头像函数
// url@ http://www.inlojv.com/
function inlo_weibo_avatar($userid,$size="32"){
    global $current_user;
    $sina_uid = get_user_meta($userid, 'sina_uid', true);
    $username = get_user_meta($userid, 'nickname', true);
    // 输出普通邮箱用户头像
    $host = 'http://secure.gravatar.com'; // 可以替换为多说服务器：http://gravatar.duoshuo.com，http://www.gravatar.com , https://secure.gravatar.com
    $email = $current_user->user_email;
    $email_hash = md5( strtolower( trim( $email ) ) );
    $out_avatar= "$host/avatar/";
    $out_avatar .= $email_hash;
    $out_avatar .= '?s=32';
    $input_alt = $current_user->display_name;
    
    if (!$sina_uid) {// 若不是微博用户登录（而是普通邮箱用户）
        $user_avatar = $out_avatar;
        $username = $input_alt;
    }else{ // 若是微博用户
        $user_avatar = 'http://tp4.sinaimg.com/'.$sina_uid.'/180/1.jpg';
    }
    $img = '<img width="'.$size.'" height="'.$size.'" class="avatar" src="'.$user_avatar.'" alt="'.$username.'">';
    echo $img;
    //return $img;
}
?>

主要是后面的头像函数，输出方式为

<?php inlo_weibo_avatar($userid,$size="32") ?>

其中的$userid是用户id，登录用户可以用这个

<?php global $current_user; inlo_weibo_avatar($current_user->ID);?>

评论用户可以用这个

<?php inlo_weibo_avatar($comment->user_id);?>

默认大小是32px 。
具体输出位置自己看着办吧。