How can one ensure the correct order of values when accessing and manipulating an associative array like $_POST in PHP?

When accessing and manipulating an associative array like $_POST in PHP, one can ensure the correct order of values by using the array_keys() function to get the keys of the array in the correct order. Then, loop through these keys to access and manipulate the values accordingly. This ensures that the values are processed in the same order as they were submitted in the form.

$post_keys = array_keys($_POST);

foreach($post_keys as $key) {
    $value = $_POST[$key];
    // Manipulate the value as needed
}