<?php

$obj = new StdClass;
$obj->location = array('lat'=>53.12345, 'lng'=>18.12345);
$obj->city = 'Bydgoszcz';
$obj->street = 'Marszalk Focha';
$obj->number = 4;
$obj->code = '85-070';

$geo = array($obj);
print_r($geo);

echo 'Lat: ' . $geo[0]->location['lat'];
echo "\n";
echo 'Long: ' . $geo[0]->location['lng'];

Array
(
    [0] => stdClass Object
        (
            [location] => Array
                (
                    [lat] => 53.12345
                    [lng] => 18.12345
                )

            [city] => Bydgoszcz
            [street] => Marszalk Focha
            [number] => 4
            [code] => 85-070
        )

)
Lat: 53.12345
Long: 18.12345