Как загрузить документ через api vk?

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Как загрузить документ через api vk?

версия php 5.6
токен получен с правами docs

PATH = /home/public_html/temp.gif
SERVER = https://pu.vk.com/c848220/upload.php?act=add_doc&mid=466918358&aid=0&gid=0&type=0&hash=95394b6fe7ee6bcdeac7424700c1e539&rhash=24e8ba656b2374e2ae7be6a07fd98264&api=1
UPLOAD_INFO(file) = {"error":"no_file","error_descr":"no_file"}
UPLOAD_DOC = {"error":{"error_code":100,"error_msg":"One of the parameters specified was missing or invalid: file is undefined","request_params":[{"key":"oauth","value":"1"},{"key":"method","value":"docs.save"},{"key":"title","value":"тест"},{"key":"tags","value":"тест"},{"key":"version","value":"5.8"}]}}

Как загрузить документ через api vk?

отработав скрипт выдаёт вот такой результат

PATH = /home/public_html/temp.gif
SERVER = https://pu.vk.com/c848220/upload.php?act=add_doc&mid=466918358&aid=0&gid=0&type=0&hash=95394b6fe7ee6bcdeac7424700c1e539&rhash=24e8ba656b2374e2ae7be6a07fd98264&api=1
UPLOAD_INFO(file) = {"error":"no_file","error_descr":"no_file"}
UPLOAD_DOC = {"error":{"error_code":100,"error_msg":"One of the parameters specified was missing or invalid: file is undefined","request_params":[{"key":"oauth","value":"1"},{"key":"method","value":"docs.save"},{"key":"title","value":"тест"},{"key":"tags","value":"тест"},{"key":"version","value":"5.8"}]}}