Deque
PHP Manual

Ds\Deque::unshift

(PECL ds >= 1.0.0)

Ds\Deque::unshiftAdds values to the front of the deque.

Description

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

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

Parameters

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.

Return Values

No value is returned.

Examples

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

<?php
$deque 
= new \Ds\Deque([123]);

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

print_r($deque);
?>

The above example will output something similar to:

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

Deque
PHP Manual