PHP-WP: Geocode address to lat and lng

gistfile1.php

function crb_get_lat_lng_by_address($address) {
	$url = 'http://maps.googleapis.com/maps/api/geocode/xml?address=' . urlencode($address) . '&sensor=false';

	$transient_key = substr(md5($address), 0, 20);
	$coords_cache = get_transient( $transient_key );

	if ( $coords_cache !== false ) {
		return $coords_cache;
	}

	$response = wp_remote_get($url);
   
	$xml = @simplexml_load_string($response['body']);

	if (strcmp($xml->status, 'OK') == 0) {
		$node = $xml->result[0];
		foreach ($xml->result as $result) {
			// We're looking for a postal code - if there is no postal code, we'll just take the first result...
			if ( strtolower($result->type) == 'postal_code' ) {
				$node = $result;
				break;
			}
		}

		$lat = (float) $node->geometry->location->lat;
		$lng = (float) $node->geometry->location->lng;

		$coords_cache = array('lat' => $lat, 'lng' => $lng);
		set_transient( $transient_key, $coords_cache, 60*60*24 );

		return $coords_cache;
	}
   
	return false;
}