Ds\Vector::copy

(PECL ds >= 1.0.0)

Ds\Vector::copy — Returns a shallow copy of the vector

说明

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

Returns a shallow copy of the vector.

参数

此函数没有参数。

返回值

Returns a shallow copy of the vector.

范例

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

<?php
$a = new \Ds\Vector([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\Vector Object
(
    [0] => 1
    [1] => 2
    [2] => 3
)
Ds\Vector 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 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 queue returns a shallow copy 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 the number of values in the collectionphp vector returns the first value in the vectorphp vector returns the value at a given indexphp vector removes and returns a value by indexphp vector returns a reversed copyphp vector removes and returns the first valuephp vector returns a sorted copyphp imagickdraw returns a string containing vector graphicsphp xmlreader returns a copy of the current node as a dom object
关注编程学问公众号