jetonr

function world_cities(){

    $csv = array_map( 'str_getcsv', file( plugin_dir_path( __FILE__ ) .  'data/countries_bordered1.csv', FILE_SKIP_EMPTY_LINES ) );
    $headers = $csv[0];
    unset($csv[0]);

    $rowsWithKeys = [];
    foreach ( $csv as $row ) {
        $newRow = [];
        foreach ( $headers as $k => $key ) {