DeepCopy:创建对象的深层副本（克隆）-开源
DeepCopy 可帮助您创建对象的深层副本（克隆）。 它旨在处理关联图中的循环。 您如何创建对象的深层副本（即也复制属性中引用的所有对象）？ 您使用 __clone() 并自己实现该行为。 DeepCopy 递归遍历对象的所有属性并克隆它们。 为了避免克隆同一个对象两次，它保留了所有实例的哈希图，从而保留了对象图。 或者，您可以创建自己的 DeepCopy 实例以对其进行不同的配置。 您可能想要推出自己的深度复制功能。 您可以添加过滤器来自定义复制过程。 DeepCopy\Matcher 适用于对象属性。 DeepCopy\TypeMatcher 适用于图中发现的任何元素，包括数组元素。 PropertyNameMatcher 将按名称匹配属性。
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