- file_get_contents: documentation ( source)
- json_decode: documentation ( source)
<?php
$url = "http://maps.googleapis.com/maps/api/distancematrix/json?origins=Bangu+RJ&destinations=Centro+RJ&mode=driving&language=pt-BR&sensor=false";
$json = file_get_contents($url);
$data = json_decode($json);
print $data->elements->distance->{'text'};
?>