This method examines xml data prior to parsing and replaces all entities like à with their equivalent (à in this case). It also scans the file for any non-ascii characters like à and replaces them with their entity equivalent (à).
This prevents saxon in PHP 4 and PHP 5 from choking on non-ISO-8859-1 characters.
The xml data.
throws no exceptions thrown
This function can not be called statically.