Posting XML to a Database

I have an ongoing project that outputs xml data to my client's server via a php script. The client would like to move the XML into a database, and their database company has instructed me to POST the XML to a web address with a form field linked to the database. This produces a server error (if I manually paste the XML into the form it works). In order to get this to work, does there need to be a PHP or some other server side script between Flash and the database? Thanks.