ksort

Sort an array by key

&reftitle.description; `bool` `ksort` `array` `array` `int` `sort_flags` SORT_REGULAR

Sorts an array by key, maintaining key to data correlations. This is useful mainly for associative arrays.

&reftitle.parameters;

`array`

- The input array.

`sort_flags`

- You may modify the behavior of the sort using the optional parameter `sort_flags`, for details see `sort`.

&reftitle.returnvalues;

&return.success;

&reftitle.examples;

### `ksort` example

    <?php
    $fruits = array("d"=>"lemon", "a"=>"orange", "b"=>"banana", "c"=>"apple");
    ksort($fruits);
    foreach ($fruits as $key => $val) {
        echo "$key = $val\n";
    }
    ?>

&example.outputs;

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

&reftitle.seealso;

- `asort`
- &seealso.array.sorting;