Synchronously Iterating and Printing Values from Two Arrays of the Same Size

When creating a selectbox using two arrays of equal size, one containing country codes and the other their corresponding names, difficulties may arise due to improper syntax.

In the example provided, the foreach statement incorrectly utilizes and alongside the arrays:

foreach( $codes as $code and $names as $name ) {
    ...
}

This approach is invalid. Instead, the use of => is necessary to synchronize the iteration:

foreach( $codes as $index => $code ) {
   echo '
Alternatively, you can simplify the process by making the country codes the keys of the $names array:
$names = array(
   'tn' => 'Tunisia',
   'us' => 'United States',
   ...
);