$access_id?=?‘LTAIXzp40zgh8qTl‘;
$access_key?=?‘shvxLzgbefjvzmPuANJXAERSRbSmkb‘;
$url=‘http://fl-dianming.oss-cn-beijing.aliyuncs.com‘;//更改成你自己的地址
$policy?=?‘{“expiration“:?“2120-01-01T12:00:00.000Z““conditions“:[{“bucket“:?“fl-dianming“?}[“content-length-range“?0?104857600]]}‘;
$policy?=?base64_encode（$policy）;
$signature?=?base64_encode（hash_hmac（‘sha1‘?$policy?$access_key?true））;//生成認證簽名
?>


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