Ds\Stack::copy

(PECL ds >= 1.0.0)

Ds\Stack::copy — Returns a shallow copy of the stack

public function Ds\Stack::copy(): Ds\Stack

Returns a shallow copy of the stack.

This function has no parameters.

Returns a shallow copy of the stack.

Example #1 Ds\Stack::copy() example

<?php
$a = new \Ds\Stack([1, 2, 3]);
$b = $a->copy();

// Updating the copy doesn't affect the original
$b->push(4);

print_r($a);
print_r($b);
?>

The above example will output something similar to:

Ds\Stack Object
(
    [0] => 3
    [1] => 2
    [2] => 1
)
Ds\Stack Object
(
    [0] => 4
    [1] => 3
    [2] => 2
    [3] => 1
)