Ds\Queue::copy

(PECL ds >= 1.0.0)

Ds\Queue::copy — Returns a shallow copy of the queue

说明

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

Returns a shallow copy of the queue.

参数

此函数没有参数。

返回值

Returns a shallow copy of the queue.

范例

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

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

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

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

以上例程的输出类似于：

Ds\Queue Object
(
    [0] => 1
    [1] => 2
    [2] => 3
)
Ds\Queue Object
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 4
)
相关文章
php collection returns a shallow copy of the collectionphp deque returns a shallow copy of the dequephp deque returns a reversed copyphp map returns a shallow copy of the mapphp map returns a copy sorted by keyphp map returns a copy sorted by valuephp pair returns a shallow copy of the pairphp priorityqueue returns a shallow copy of the queuephp priorityqueue returns the number of values in the queuephp priorityqueue returns whether the queue is emptyphp priorityqueue returns the value at the front of the queuephp queue returns a shallow copy of the queuephp queue returns a representation that can be converted to jsonphp queue returns the value at the front of the queuephp queue removes and returns the value at the front of the queuephp set returns a shallow copy of the setphp stack returns a shallow copy of the stackphp vector returns a shallow copy of the vectorphp vector returns a reversed copyphp pht queue returns the first value from a queue
关注编程学问公众号