无需将它们放入数组中。根据google\'s documentation 您应该像标准（美国）格式的地址一样，将url中的各个地址分开。

// Example taken from google\'s docs:
$state = \'CA\';
$street = \'Mountain View\';
$address = \'1600 Amphitheatre Parkway\';

function geocode_address($post_id)
{
    $custom_fields = get_post_custom();

    // just set $city, $state and $address to the appropriate custom field variables here

    if(isset($custom_fields[\'state\']) && !empty($custom_fields[\'state\'][0]))
    {

 $resp = wp_remote_get( "http://maps.googleapis.com/maps/api/geocode/json?address=".urlencode($address . \',\' . $city . \',\' .$state)."&sensor=false" );
            if ( 200 == $resp[\'response\'][\'code\'] ) {
                    $body = $resp[\'body\'];
                    $data = json_decode($body);
                    if($data->status=="OK"){
                            $latitude = $data->results[0]->geometry->location->lat;
                            $longitude = $data->results[0]->geometry->location->lng;
                            update_post_meta($post_id, "latitude", $latitude);
                            update_post_meta($post_id, "longitude", $longitude);
                    }
            }
    }
}
add_action(\'save_post\', \'geocode_address\');