How to learn PHP kernel?

How to learn PHP kernel?

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How to learn PHP kernel?

Open source document "Deep PHP kernel" http://www.php-internals.com/

1. First, the most basic should be clear of an HTTP request process, in Apache, for example, when launching Apache mod-php how to initialize PHP, how to initialize the Zend engine, Apache loading mod_php and SAPI relationship
2.PHP execution, such as lexical analysis, grammatical analysis, the process of generating opcode
3. Internal structure, class and object-oriented implementation of variables and functions
4. Memory Management (garbage collection, copy on write, etc.)
5. Handling of underlying errors and exceptions
6. Core Zend Virtual machines

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