Iterate through SimpleXMLElement to retrieve postal code value - php

Question

I am trying to extract the postal code from the Google Geocode v3 API XML Response. The difficulty I am having is that sometimes the postal_code value is contained in the 6th address_element and sometimes in the 7th. Here is the XML response that I am working with and in this sample response you can see that the postal_code is the 6th element of the address_component array:
SimpleXMLElement Object
(
[status] => OK
[result] => Array
(
[0] => SimpleXMLElement Object
(
[type] => street_address
[formatted_address] => 177 Church St, Toronto, ON M5C 2G5, Canada
[address_component] => Array
(
[0] => SimpleXMLElement Object
(
[long_name] => 177
[short_name] => 177
[type] => street_number
)
[1] => SimpleXMLElement Object
(
[long_name] => Church St
[short_name] => Church St
[type] => route
)
[2] => SimpleXMLElement Object
(
[long_name] => Toronto
[short_name] => Toronto
[type] => Array
(
[0] => locality
[1] => political
)
)
[3] => SimpleXMLElement Object
(
[long_name] => Toronto
[short_name] => Toronto
[type] => Array
(
[0] => administrative_area_level_2
[1] => political
)
)
[4] => SimpleXMLElement Object
(
[long_name] => Ontario
[short_name] => ON
[type] => Array
(
[0] => administrative_area_level_1
[1] => political
)
)
[5] => SimpleXMLElement Object
(
[long_name] => Canada
[short_name] => CA
[type] => Array
(
[0] => country
[1] => political
)
)
[6] => SimpleXMLElement Object
(
[long_name] => M5C 2G5
[short_name] => M5C 2G5
[type] => postal_code
)
)
[geometry] => SimpleXMLElement Object
(
[location] => SimpleXMLElement Object
(
[lat] => 43.6547363
[lng] => -79.3763746
)
[location_type] => RANGE_INTERPOLATED
[viewport] => SimpleXMLElement Object
(
[southwest] => SimpleXMLElement Object
(
[lat] => 43.6533849
[lng] => -79.3777345
)
[northeast] => SimpleXMLElement Object
(
[lat] => 43.6560829
[lng] => -79.3750365
)
)
[bounds] => SimpleXMLElement Object
(
[southwest] => SimpleXMLElement Object
(
[lat] => 43.6547315
[lng] => -79.3763964
)
[northeast] => SimpleXMLElement Object
(
[lat] => 43.6547363
[lng] => -79.3763746
)
)
)
)

Answer 1

I haven't tried this, but I think it should work.
$address = $array->result[0]->address_component;
$postal_code = '';
foreach($address as $adr){
if($adr->type == 'postal_code'){
$postal_code = $adr->long_name;
}
}