Xapian discuss - Jul 2009 - php error parse_query

I'm having trouble getting a search via php working, I get the following 
error:

*Fatal error*: No matching function for overloaded 
'QueryParser_parse_query' in */usr/local/share/php5/xapian.php* on line 
*1409


*The error occurs at this code

        $query = $qp->parse_query( $query_string ,
                XapianQueryParser::FLAG_PHRASE
                | XapianQueryParser::FLAG_BOOLEAN
                | XapianQueryParser::FLAG_LOVEHATE
                | XapianQueryParser::FLAG_SPELLING_CORRECTION
                );


I also tried

$query = $qp->parse_query($query_string);

It's really got me scratching my head because I've had it working 
before, any ideas where I should start looking, could it be a system 
config error?
I'm using Ubuntu and Xapian 1.0.13


Regards,

Frank

On Wed, Jul 08, 2009 at 12:19:43PM +0930, Frank John Bruzzaniti
wrote:
> *Fatal error*: No matching function for overloaded 
> 'QueryParser_parse_query' in */usr/local/share/php5/xapian.php* on
line
> *1409
> [...]
> 
> $query = $qp->parse_query($query_string);
Sounds like something doesn't have the type you expect - I would try
printing out var_dump($qp) and var_dump($query_string).

Cheers,
    Olly