Question

I’ve got this array (shortened for this question), and I need to extract the country_code (“AF” and “AL” in this demo) in order to insert the region info into a table based on the country.

How do I get the country code while iterating the array and is this the correct way to do this?

$countries = array("AF" => array("BDS" => "Badakhshan",
                                 "BDG" => "Badghis",
                                 "BGL" => "Baghlan",
                                 "BAL" => "Balkh",
                                 "BAM" => "Bamian",
                                 "DAY" => "Daykondi"),
                   "AL" => array("BR" => "Berat",
                                 "BU" => "Bulqizë",
                                 "DL" => "Delvinë",
                                 "DV" => "Devoll",
                                 "DI" => "Dibër",
                                 "DR" => "Durrës",
                                 "EL" => "Elbasan",
                                 "FR" => "Fier")
);

foreach ($countries as $country) {
  $country_code = $country[]; // How do I get the country code here?
  foreach ($country as $region_code => $region_name) {
    // insert region info into table
  } // foreach ($country as $region_code => $region_name)
} // foreach ($countries as $country)

Answer 1

Your array is setup with key => value pairs, meaning you have a value, and an identifier for that value.

$myArray = array( "Key" => "Value" );

Or, in the case of your code:

$myArray = array( "Country Code" => array( "Region" => "Codes" ) );

If you wish to get the key while looping, use the following syntax:

foreach ( $myArray as $key => $value ) {
  echo $key; // "Country Code"
  foreach ( $value as $region_key => $region_code ) {
    echo $region_key; // Region
  }
}

Now you’re able to access the identifer with each iteration.