How to use rsort function

php rsort() is used to sort the array in reverse order.

php rsort() function Syntax

Function: Sort the numerical array in descending order.

Syntax:

rsort(array,sortingtype)

Parameters:

array Required. Specifies the array to be sorted.

sortingtype Optional. Specifies how elements/items of an array are compared. Possible values: 0 = SORT_REGULAR - Default. Put each item in regular order (Standard ASCII, don't change the 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 with 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: Give new key names to the cells in array. This will delete the original keys rather than just reorder them. Returns TRUE if successful, FALSE otherwise. The optional second parameter contains additional sorting flags.

php rsort() function example

<?php
$a=array("a"=>"php中文网","b"=>"西门","c"=>"php.cn");
rsort($a);
print_r($a);
?>

Output:

Array ( [0] => 西门 [1] => php中文网 [2] => php.cn )

This article is an introduction to the PHP rsort function. I hope it will be helpful to friends who need it. Helps!

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