Not sure if I understand your question correctly.
Since Wordpress requires a PHP runtime which gh-pages does not provide, uploading .php files would only result in people seeing the source code when visiting the GitHub page.
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Could you be knowing how to deploy the extracted site to GitHub with gh-pages?
Not sure if I understand your question correctly.
Since Wordpress requires a PHP runtime which gh-pages does not provide, uploading
.phpfiles would only result in people seeing the source code when visiting the GitHub page.