date("Y-m-d\\TH:i:s",(time()+60)).".000Z",//"2020-01-01T12:00:00.000Z" "conditions"=>array( array( "content-length-range", 0, 1048576000 ) ) ); $policyText=json_encode($policy); $policyBase64=base64_encode($policyText); $bytes=hash_hmac("sha1",$policyBase64,$config['secret_key'],true); $signature=base64_encode($bytes); $res['policy']=$policyBase64; $res['signature']=$signature; $res['OSSAccessKeyId']=$config['access_key']; $res['domain']="https://".$config['bucket'].'.'.$config['endpoint']; $res['folder']="chengluApp"; return response()->json($res); } }