How to reverse array values ​​in php

How to reverse array values ​​in php: You can use the array_reverse() function to achieve this. The syntax of the function is: [array_reverse(array,preserve)], where the parameter array specifies the array that needs to be reversed.

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How to reverse php array values:

array_reverse() The function returns an array in the reverse order of elements.

Description

array_reverse() The function reverses the order of elements in the original array, creates a new array and returns it.

If the second parameter is specified as true, the key name of the element remains unchanged, otherwise the key name will be lost.

Syntax

array_reverse(array,preserve)

Parameters

array required. Specifies an array.

preserve

Optional. Specifies whether to retain the original array key names.

This parameter is newly added in PHP 4.0.3.

Possible values:

true

false

Examples:

Example 1

Return Original array, reversed array, flipped array retaining the original array key name:

<?php
$a=array("Volvo","XC90",array("BMW","Toyota"));
$reverse=array_reverse($a);
$preserve=array_reverse($a,true);
print_r($a);
print_r($reverse);
print_r($preserve);
?>

Run result:

Array ( [0] => Volvo [1] => XC90 [2] => Array ( [0] => BMW [1] => Toyota ) ) Array ( [0] => Array ( [0] => BMW [1] => Toyota ) [1] => XC90 [2] => Volvo ) Array ( [2] => Array ( [0] => BMW [1] => Toyota ) [1] => XC90 [0] => Volvo )

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