(PECL sphinx >= 0.1.0)
Set anchor point for a geosphere distance calculations
public bool SphinxClient::setGeoAnchor ( string $attrlat, string $attrlong, float $latitude, float $longitude )
Sets anchor point for a geosphere distance (geodistance) calculations and enables them.
Once an anchor point is set, you can use magic "@geodist" attribute name in your filters and/or sorting expressions.
Parameters: