Ds\Deque::unshift

(PECL ds >= 1.0.0)

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

說明

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.

參數(shù)

values

The values to add to the front of the deque.

注意:

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

返回值

沒有返回值。

范例

示例 #1 Ds\Deque::unshift() example

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

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

print_r($deque);
?>

以上例程的輸出類似于：

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