修改这个文件model/user.func.php
修改第201
行,将:
$user['avatar_url'] = $user['avatar'] ? $conf['upload_url']."avatar/$dir/$user[uid].png?".$user['avatar'] : 'view/img/avatar.png';
修改为以下:
$user['avatar_url'] = $user['avatar'] ? $conf['upload_url']."avatar/$dir/$user[uid].png?".$user['avatar'] : 'https://cdn.staticdn.net/avatar/'.MD5($user['email']).'?s=100&r=G&d=identicon';