How to get elements in reverse order of an array in PHP ?

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An array is a collection of elements stored together. Every element in an array belong to a similar data type. The elements in the array are recognized by their index values. The elements can be subjected to a variety of operations, including reversal. There are various ways to reverse the elements of an array :

Approach 1: Using for Loop, a decrement for loop can be initiated in order to access the elements in the reverse order. The index begins at the length of the array – 1 until it reaches the beginning of the array. During each iteration, the inbuilt array_push method is called, which is used to push the elements to the newly declared array maintained for storing reverse contents.

Syntax:

array_push($array, $element)

PHP

<?php 
    // Declaring an array 
    $arr = array(1, 2, 3, 4, 5); 
    echo("Original Array : "); 
    print_r($arr); 
  
    // Declaring an array to store reverse 
    $arr_rev = array(); 
    for($i = sizeof($arr) - 1; $i >= 0; $i--) { 
        array_push($arr_rev,$arr[$i]); 
    } 
  
    echo("Modified Array : "); 
    print_r($arr_rev); 
?>

Output

Original Array : Array
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 4
    [4] => 5
)
Modified Array : Array
(
    [0] => 5
    [1] => 4
    [2] => 3
    [3] => 2
    [4] => 1
)

Approach 2 : Using array_reverse() Method, the array_reverse() function can be used to reverse the contents of the specified array. The output is also returned in the form of an array.

Syntax:

array_reverse($array)

PHP

<?php 
    // Declaring an array 
    $arr = array(1, 2, 3, 4, 5); 
    echo("Original Array : "); 
    print_r($arr); 
  
    // Reversing array 
    $arr_rev = array_reverse($arr); 
    echo("Modified Array : "); 
    print_r($arr_rev); 
?>

Output

Original Array : Array
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 4
    [4] => 5
)
Modified Array : Array
(
    [0] => 5
    [1] => 4
    [2] => 3
    [3] => 2
    [4] => 1
)