High level API to the engine that allows you to integrate the core with virtually any communication layer.

给引擎提供的高层API允许你将任意通信层集成到内核中。

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PHP as a whole consists of 3 modules (Core PHP, Zend Engine and Extension Layer)

PHP总共有三个模块：内核、Zend引擎、以及扩展层；

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PHP as a whole consists of 3 modules (Core PHP, Zend Engine and Extension Layer)

PHP总共有三个模块：内核、Zend引擎、以及扩展层；

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