Suppose an array of country codes and country names is created with a statement like this:$country_codes = array('DEU' => 'Germany', 'JPN' => 'Japan','ARG' => 'Argentina', 'USA' => 'United States');If you want to use echo statements to display a table of all of the codes and names, you could code those statements within a loop that starts like this:for ($country_codes as $code => $name) {foreach ($country_codes as $code => $name) {Such a loop is not possible.for ($country_codes as $name[code]) {foreach ($country_codes as $name[code]) {