How to use array_reverse function in php

Usage of array_reverse function in php: [array_reverse(array,preserve)]. This function can reverse the order of elements in the original array, create a new array and return it.

php The array_reverse function is used to return an array in the reverse order of elements. Its syntax is array_reverse(array,preserve). The parameter array is required and refers to the specified array.

(Recommended tutorial: php video tutorial)

How to use the php array_reverse function?

Function: Use the opposite element Returns the array in sequence

Syntax:

array_reverse(array,preserve)

Parameters:

array Required. Specifies an array.

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

Instructions:

Reverse the order of elements in the original array, create a new array and return it. If the second parameter is specified as true, the element's key name remains unchanged, otherwise the key name is lost.

php array_reverse() function usage example 1

<?php
$a = array("class" => "php中文网","name" => "西门","job" => "讲师");
print_r(array_reverse($a));
?>

Output:

Array ( [job] => 讲师 [name] => 西门 [class] => php中文网 )

php array_reverse() function usage example 2

<?php
$a=array("a"=>"Volvo","b"=>"BMW","c"=>"Toyota");
print_r(array_reverse($a));
?>

Output:

Array ( [c] => Toyota [b] => BMW [a] => Volvo )

The above is the detailed content of How to use array_reverse function in php. For more information, please follow other related articles on the PHP Chinese website!