How to Rotate Elements in an Array in PHP - Step by Step Examples

How to Rotate Elements in an Array in PHP ?

Answer

To rotate elements in an array using PHP, you can use the built-in array functions like array_slice and array_merge.

✐ Examples

1 Rotate Array of Integers

In this example,

We have an array named $intArray containing integers.
We use the array_slice function to extract and rotate elements from $intArray.
We use the array_merge function to combine the rotated and remaining elements.
We print the rotated array to demonstrate the rotation.

PHP Program

<?php
$intArray = [1, 2, 3, 4, 5];
$positions = 2;
$rotatedArray = array_merge(array_slice($intArray, $positions), array_slice($intArray, 0, $positions));
print_r($rotatedArray);
?>

Output

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

2 Rotate Array of Strings

In this example,

We have an array named $strArray containing strings.
We use the array_slice function to extract and rotate elements from $strArray.
We use the array_merge function to combine the rotated and remaining elements.
We print the rotated array to demonstrate the rotation.

PHP Program

<?php
$strArray = ['apple', 'banana', 'cherry', 'date', 'fig'];
$positions = 3;
$rotatedArray = array_merge(array_slice($strArray, $positions), array_slice($strArray, 0, $positions));
print_r($rotatedArray);
?>

Output

Array
(
    [0] => date
    [1] => fig
    [2] => apple
    [3] => banana
    [4] => cherry
)

Summary

In this tutorial, we learned How to Rotate Elements in an Array in PHP language with well detailed examples.

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How to Rotate Elements in an Array in PHP - Step by Step Examples

How to Rotate Elements in an Array in PHP ?

Answer

✐ Examples

1 Rotate Array of Integers

PHP Program

Output

2 Rotate Array of Strings

PHP Program

Output

Summary

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