如何克隆在PHP对象的数组？ [英] How to clone an array of objects in PHP?

问题描述

我有对象的数组。我知道，物体得到由引用和数组由价值进行分配。但是，当我指定数组，数组的每个元素引用对象，所以当我要么数组中修改对象的变化反映在其他。

I have an array of objects. I know that objects get assigned by "reference" and arrays by "value". But when I assign the array, each element of the array is referencing the object, so when I modify an object in either array the changes are reflected in the other.

有没有一种简单的方法来克隆一个数组，或者我必须依次通过它来克隆每个对象？

Is there a simple way to clone an array, or must I loop through it to clone each object?

推荐答案

引用当您复制的阵列已经被复制相同的对象。但是，这听起来像你想<击>浅拷贝深复制，当您创建第二个数组的第一个数组中被引用的对象，所以你得到不同但类似的对象的两个数组。

References to the same objects already get copied when you copy the array. But it sounds like you want to shallow-copy deep-copy the objects being referenced in the first array when you create the second array, so you get two arrays of distinct but similar objects.

最直观的方式，我可以想出现在是一个循环;有可能是更为简单，更优雅的解决方案在那里：

The most intuitive way I can come up with right now is a loop; there may be simpler or more elegant solutions out there:

$new = array();

foreach ($old as $k => $v) {
    $new[$k] = clone $v;
}

这篇关于如何克隆在PHP对象的数组？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！