How to use php krsort function

php The krsort function is used to sort an associative array in descending order by key name. Its syntax is krsort(array, sortingtype). The parameter array is required and refers to the array to be sorted.

#php How to use krsort function?

Definition and usage

krsort() function sorts the associative array in descending order by key name.

Tip: Please use the ksort() function to sort the associative array in ascending order by key name.

Tip: Please use the arsort() function to sort the associative array in descending order by key value.

Syntax

krsort(array,sortingtype);

Parameters

array Required. Specifies the array to be sorted.

sortingtype is optional. Specifies how the elements/items of an array are arranged. Possible values:

0 = SORT_REGULAR - Default. Put each item in regular order (Standard ASCII, no change of type)

1 = SORT_NUMERIC - Treat each item as a number.

2 = SORT_STRING - Treat each item as a string.

3 = SORT_LOCALE_STRING - Treat each item as a string, based on the current locale (can be changed via setlocale()).

4 = SORT_NATURAL - Treat each item as a string, using natural sorting like natsort().

5 = SORT_FLAG_CASE - Strings can be sorted in combination (bitwise OR) with SORT_STRING or SORT_NATURAL, case-insensitively.

Description

The krsort() function sorts the array in reverse order by key, retaining the original keys for the array values.

The optional second parameter contains additional sorting flags.

If successful, return TRUE, otherwise return FALSE.

Return value: TRUE if successful, FALSE if failed.

PHP Version: 4

Example

Sort the associative array in descending order by key name:

<?php
$age=array("Bill"=>"60","Steve"=>"56","mark"=>"31");
krsort($age);
?>

Output:

Key=mark, Value=31
Key=Steve, Value=56
Key=Bill, Value=60

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