function continents_api_get_countries in Country codes API 5

Same name and namespace in other branches

1. 6 contrib/continents_api/continents_api.module \continents_api_get_countries()

Function to get a region by iso2 country name

Parameters

$continent_code: A continent code. E.g. 'EU' for Europe.

Return value

A list of countries in the given continent. In ISO-2 format. Use the countries_api module to convert to other country representations. Returns NULL in case of an invalid continent code.

File

contrib/continents_api/continents_api.module, line 40

Continents API provides an API for official and up-to-date list of continents and their countries. Countries are provided in ISO 3166 alpha-2 country codes. Source: http://en.wikipedia.org/wiki/List_of_countries_by_continent_(data_file)

Code

function continents_api_get_countries($continent_code) {

  // Validate the continent code.
  $valid_continent_codes = array_keys(continents_api_get_continents());
  if (!in_array($continent_code, $valid_continent_codes)) {
    return NULL;
  }

  // Look up the countries for the given continent.
  $result = db_query("SELECT country FROM {continents_api_continents} WHERE continent = '%s'", $continent_code);
  $continents = array();
  while ($row = db_fetch_object($result)) {
    $countries[] = $row->country;
  }
  return $countries;
}