Using krsort() to Sort an Array by Keys in Reverse Order (PHP)

The PHP function krsort() sorts an array by its keys in reverse order while preserving key‑value associations.

It accepts the array by reference and an optional sort_flags parameter to modify sorting behavior, returning TRUE on success or FALSE on failure.

Example:

"lemon",
    "a" => "orange",
    "b" => "banana",
    "c" => "apple"
);

krsort($fruits);
foreach ($fruits as $key => $val) {
    echo "$key = $val\n";
}
?>

The output will be:

d = lemon
c = apple
b = banana
a = orange