WordPress设定随机显示在本地头像上附加1000张以上的随机头像图像进行打包下载

add_filter( 'get_avatar' , 'local_random_avatar' , 1 , 5 );
function local_random_avatar( $avatar, $id_or_email, $size, $default, $alt) {
    if ( ! empty( $id_or_email->user_id ) ) {
        $avatar = ''.get_template_directory_uri().'/avatar/admin.jpg';
    }else{
        $random = mt_rand(1, 10);
        $avatar = ''.get_template_directory_uri().'/avatar/'. $random .'.jpg';
    }
    $avatar = "<img alt='{$alt}' src='{$avatar}' class='avatar avatar-{$size} photo' height='{$size}' width='{$size}' />";
    return $avatar;
}