FileMaker's ESS does not support blob/container files in Microsoft SQL Server, Oracle or MySQL. FileMaker only supports binary files in local FileMaker container fields.
There are workarounds if you want to use CWP/PHP via web pages, but it is not an easy solution. Basically the answer to your question is "No".
The only way that I am aware of, is with the MBS 3rd party plugin. They recently added some nice new features in version 3 of the product.