求教：阿里云 PHP 环境 IOS 静默推送问题

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iOS 静默推送失败，请求参数："http://cloudpush.aliyuncs.com/?Format=json&RegionId=cn-hangzhou&Version=2016-08-01&AccessKeyId=XXXXXXXXX&SignatureMethod=HMAC-SHA1&Timestamp=2018-06-19T07:57:31Z&SignatureVersion=1.0&SignatureNonce=5b28b76b02586&Action=Push&AppKey=24XXXXXX&Target=ACCOUNT&TargetValue=2&DeviceType=iOS&PushType=NOTICE&iOSSilentNotification=true&aps={"content-available":1,"money":1.5}&Signature=YXKYpx848OURqfDnAsXXX+PSfk="