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:

$numbers = array(1, 2, 3, 4);
array_push($numbers, array_shift($numbers));

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.