Ds\Deque::unshift

(PECL ds >= 1.0.0)

Ds\Deque::unshift — Adds values to the front of the deque

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public Ds\Deque::unshift ([ mixed $values ] ) : void

Adds values to the front of the deque, moving all the current values forward to make room for the new values.

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values

The values to add to the front of the deque.

Note:

Multiple values will be added in the same order that they are passed.

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Example #1 Ds\Deque::unshift() example

<?php
$deque = new \Ds\Deque([1, 2, 3]);

$deque->unshift("a");
$deque->unshift("b", "c");

print_r($deque);
?>

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Ds\Deque Object
(
    [0] => b
    [1] => c
    [2] => a
    [3] => 1
    [4] => 2
    [5] => 3
)