How to flip array in php

In PHP, you can use the array_reverse() function to reverse the array. This function will reverse the order of the elements in the original array, create a new array and return it; the syntax is "array_reverse(array,preserve)".

The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

In php, you can use array_reverse () function performs array flipping.

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

Syntax:

array_reverse(array,preserve)

• preserve: Optional. Specifies whether to retain the original array key names. If true is specified, the element's key name remains unchanged, otherwise the key name is lost.

Example:

Return the original array, flip the array:

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

var_dump($a);
var_dump($reverse);
?>

Return the original array key name retained Flip array

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

var_dump($preserve);
?>

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