krsort
(PHP 4, PHP 5, PHP 7, PHP 8)
krsort — Sort an array by key in descending order
Description
krsort(array &$array, int $flags = SORT_REGULAR): trueSorts array in place by keys in descending order.
Note:
If two members compare as equal, they retain their original order. Prior to PHP 8.0.0, their relative order in the sorted array was undefined.
Note:
Resets array's internal pointer to the first element.
Parameters
array-
The input array.
flags-
The optional second parameter
flagsmay be used to modify the sorting behavior using these values:Sorting type flags:
SORT_REGULAR- compare items normally; the details are described in the comparison operators sectionSORT_NUMERIC- compare items numericallySORT_STRING- compare items as strings-
SORT_LOCALE_STRING- compare items as strings, based on the current locale. It uses the locale, which can be changed using setlocale() -
SORT_NATURAL- compare items as strings using "natural ordering" like natsort() -
SORT_FLAG_CASE- can be combined (bitwise OR) withSORT_STRINGorSORT_NATURALto sort strings case-insensitively
Return Values
Always returns true.
Changelog
| Version | Description |
|---|---|
| 8.2.0 | The return type is true now; previously, it was bool. |
Examples
Example #1 krsort() example
<?php
$fruits = array("d"=>"lemon", "a"=>"orange", "b"=>"banana", "c"=>"apple");
krsort($fruits);
foreach ($fruits as $key => $val) {
echo "$key = $val\n";
}
?>The above example will output:
d = lemon
c = apple
b = banana
a = orange
See Also
- sort() - Sort an array in ascending order
- ksort() - Sort an array by key in ascending order
- The comparison of array sorting functions
© 1997–2023 The PHP Documentation Group
Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/function.krsort.php