/*
use the following snippet to calculate distance between two addresses
requires your own Google Maps Platform API key
https://cloud.google.com/maps-platform/pricing
*/

$GOOGLE_API_KEY = 'xxxxxxxxxxxxxxxxxxxx';

$gdm = new GoogleDistanceMatrixAPI($GOOGLE_API_KEY);

$mode = 'driving';
$unit = 'imperial';

$gdm->setOrigin($DATA['origin']['address1'],'',$DATA['origin']['city'],$DATA['origin']['province'],$DATA['origin']['postal_code'],$DATA['origin']['country']);
$gdm->setDestination($DATA['destination']['address1'],'',$DATA['destination']['city'],$DATA['destination']['province'],$DATA['destination']['postal_code'],$DATA['destination']['country']);
$resp = $gdm->getDistance($mode,$unit);
$meters = $resp['meters'];

/*
sample output
$resp = array(
    [meters] => 870
    [distance] => 0.5 mi
    [durationSeconds] => 252
    [durationVerbose] => 4 mins
}
*/