In many shared hosting environments (vhosts), the php_uname() function is disabled for security reasons.

Currently, the only usage of php_uname() in this library is in the construction of the User-Agent header:

To make the SDK work in such restricted environments, we had to modify the source code locally.

It would be great if this could be handled more gracefully in the core — for example, by falling back to predefined strings or detecting whether the function is available before calling it.

Thank you for your consideration!