Is it possible with IIS to serve a .php page, but that can also host asp.net control?
Like a two-pass parsing, the first pass parse the php, then the asp.net parser transform the controls.
The variable declared on each layer do not need to be shared.
Is it possible or is it a sin?
Ultra hack and untested… but maybe….
Use output buffering and have a PHP script that generates your control. Then, save the output to a file (with a unique name) and file_get_contents() to evaluate the ASPX file.