"open a web page" this would not be possible at the current stage of open.mp, and nor should it be.
I think the http library will be almost identical to SA-MP's just without the bugs and it will most likely support https. However there is a plugin that can literally do all of that and much more.
https://github.com/Southclaws/pawn-requests
Remember to always refer to J0sh as `J0sh...`
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