Description:
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MSSQL (and FreeTDS) has the notion of Application Name on for the connection.
In the php5 mssql module it hard codes that to 'PHP 5'. Ideally this would be a user configurable setting. When multiple PHP applications are connecting to the same MSSQL database it makes it much easier to distinguish between connections by this Application Name.

Expected result:
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By Applying this patch it allows the user to set an application for the connection and it is visible in the MSSQL profiler and other tools.

//Example Use:
$dbhandle = mssql_pconnect($server_name, $user, $password, $new_link, "My PHP App");