Perhaps, but not recommended. Choose one or the other. In the worst case scenario, you can use php curl to capture aspx or even (GRASP!) Iframes. This puts a lot of extra stress on the server because it needs to get the php file, parse it, then get the aspx file, parse it and then send it to php (or php is enough) and then displays the rest of php after the request. This will also reduce boot time.
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