How can you output an array from a different file as an echo in PHP?

To output an array from a different file as an echo in PHP, you can include the file that contains the array using the `include` or `require` function. Once the file is included, you can access the array and echo its contents using `print_r` or `var_dump`.

<?php
// Include the file that contains the array
include 'array_file.php';

// Output the array using print_r
echo '<pre>';
print_r($array_name);
echo '</pre>';
?>