Dean，你最好通过前端的JS来完成。

我使用以下函数将邮政编码转换为Lat和Lng：

function codeAddress(address){
    geocoder.geocode({
        \'address\': address
    }, function(results, status){
        if(status == google.maps.GeocoderStatus.OK){
            map.setCenter(results[0].geometry.location);
            map.setZoom(16);

            var marker = new google.maps.Marker({
                map: map,
                position: results[0].geometry.location
            });

            markersArray.push(marker);      

            // BA Lng, za Lat 

            //console.log(results[0].geometry.location[\'Ba\']);

            document.getElementById("_supplier_maplatlong").value = results[0].geometry.location;

        }else{
            alert("Postcode not found");
        }
    });
}

if($(\'#_supplier_postcode\').val()){
        codeAddress($(\'#_supplier_postcode\').val());
    }