Gravatar正在减慢我的网站速度，我想在我的主服务器上托管神秘人。这是我正常的墓地神秘人

<img class="avatar avatar-68 avatar-default" width="68" height="68" alt="avatar" style="width: 68px; height: 68px;" src="http://1.gravatar.com/avatar/b759acf051d7e8b32049b6527ac13485?s=68&d=http%3A%2F%2Fwww.gravatar.com%2Favatar%2Fad516503a11cd5ca435acc9bb6523536%3Fs%3D68&r=G"></img>

我想把它放在我的服务器上，所以我尝试使用这个php代码

function my_own_gravatar( $avatar_defaults ) {  
    $myavatar = get_bloginfo(\'template_directory\') . \'/design/img/m.png\';  
    $avatar_defaults[$myavatar] = \'DEFAULT SPEED\';  
    return $avatar_defaults;  
}  
add_filter( \'avatar_defaults\', \'my_own_gravatar\' ); 

但仍然存在gravatar和redirect，这会减慢加载时间

<img src="http://0.gravatar.com/avatar/470ba3844a4ca24a9a125e198a424027?s=68&amp;d=http%3A%2F%2Fwww.my-website.com%2Fwp-content%2Fthemes%2Fdirectory%2Fdesign%2Fimg%2Fm.png&amp;r=G" class="avatar avatar-68 avatar-default" height="68" width="68" style="width: 68px; height: 68px;" alt="avatar">

你能帮帮我吗？

//Add a Default "Gravatar" to Options

if ( !function_exists(\'fb_addgravatar\') ) {
function fb_addgravatar( $avatar_defaults ) { 
    $myavatar = get_bloginfo(\'template_directory\') . \'/images/default_user.png\';
    $avatar_defaults[$myavatar] = \'My Website Default Image\';
    return $avatar_defaults;
}
add_filter( \'avatar_defaults\', \'fb_addgravatar\' );
}