Deque
PHP Manual

Ds\Deque::copy

(PECL ds >= 1.0.0)

Ds\Deque::copyReturns a shallow copy of the deque

说明

public Ds\Deque Ds\Deque::copy ( void )

Returns a shallow copy of the deque.

参数

此函数没有参数。

返回值

A shallow copy of the deque.

范例

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

<?php
$a 
= new \Ds\Deque([123]);
$b $a->copy();

$b->push(4);

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

以上例程的输出类似于:

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

Deque
PHP Manual