Detailed introduction to php arsort array descending order_php example

php arsortFunction is used to sort the elements in array in descending order. If the sorting is successful, it returns true, otherwise it returns false. This article is dedicated to Everyone explains the basic syntax and usage examples of the arsort function. Friends who need it can refer to

arsort to sort the array in descending order and maintain the index relationship.

Basic syntax

bool arsort ( array &$array [, int $sort_flags = SORT_REGULAR ] )

This function sorts the array in descending order, and the index of the array remains associated with the unit.

The arsort function is mainly used to sort associative arrays where the order of the units is important.

Parameter introduction:

Parameter	Description
array	Required. The input array.
sort_flags	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 - Can be combined (bitwise OR) with SORT_STRING or SORT_NATURAL to sort strings, case-insensitively.

Description

The arsort() function sorts the array in reverse order and maintains the index relationship. Mainly used for sorting associative arrays where the order of cells is important.

The optional second parameter contains additional sorting flags.

Return value

Returns TRUE on success, or FALSE on failure.

Example:

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

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