How to Rotate Array Elements Left in PHP Using Array Functions?

Rotating Array Elements Left in PHP

Rotating an array in PHP, moving the first element to the last and re-indexing the array, can be achieved using a combination of PHP's array_push() and array_shift() functions.

PHP Function:

PHP does not have a built-in function specifically for rotating arrays. However, the following code snippet demonstrates how to simulate the desired rotation behavior:

<code class="php">$numbers = array(1, 2, 3, 4);
array_push($numbers, array_shift($numbers));</code>

How It Works:

1. array_shift($numbers) removes the first element from the $numbers array and assigns it to a temporary variable.
2. array_push($numbers, $temporary_variable) adds the value stored in the temporary variable to the end of the $numbers array.

Output:

When the code is executed, it rotates the $numbers array elements left, resulting in the following output:

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

This solution is simple and efficient, allowing you to easily rotate array elements in PHP without the need for complex algorithms or additional libraries.

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