sort array in DESC order

Question

How can i sort this array by arrray key

array(
4 => \'four\',
3 => \'three\',
2 => \'two\',
1 => \'one\',
)

like this

Answer 1

You have an array, you want to sort it by keys, in reverse order -- you can use the krsort function :

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

In you case, you'd have this kind of code :

$arr = array(
    1 => 'one',
    2 => 'two',
    3 => 'three',
    4 => 'four',
);

krsort($arr);
var_dump($arr);

which would get you this kind of output :

$ /usr/local/php-5.3/bin/php temp.php
array(4) {
  [4]=>
  string(4) "four"
  [3]=>
  string(5) "three"
  [2]=>
  string(3) "two"
  [1]=>
  string(3) "one"
}

As a sidenode : if you had wanted to sort by values, you could have used arsort -- but it doesn't seem to be what you want, here.