对于有经验的开发人员而言，PHP(从v5开始)提供了强大的面向对象特性。

For the more experienced developer, it (as of V5) offers robust object-oriented features.

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当这个工具包获得了面向对象特性和可扩展性之后，才在名称后面加上了一个加号。

The plus sign was added to the name later, when the tool kit gained object-oriented features and extensibility.

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让我们来看一些php新的面向对象特性，并了解如何将现有PHP V 4代码迁移到PHP V5。

Take a tour through some of PHP's new object-oriented features and learn how to migrate existing PHP V4 code into V5.

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