Ds\Set::copy
(PECL ds >= 1.0.0)
Ds\Set::copy — Returns a shallow copy of the set
參數
此函式沒有參數。
返回值
Returns a shallow copy of the set.
範例
示例 #1 Ds\Set::copy() example
<?php
$a = new \Ds\Set([1, 2, 3]);
$b = $a->copy();
// Updating the copy doesn't affect the original
$b->add(4);
print_r($a);
print_r($b);
?>
以上例程的輸出類似於:
Ds\Set Object ( [0] => 1 [1] => 2 [2] => 3 ) Ds\Set Object ( [0] => 1 [1] => 2 [2] => 3 [3] => 4 )