Detailed explanation of PHP source code directory structure and function description

This article mainly introduces the in-depth understanding of the source code directory structure and function description of PHP, and briefly analyzes the main directory and corresponding functions of the PHP source code. Friends in need can refer to it

The reason why PHP can be used in It ranks high among web development languages, not just because of its simple syntax and ease of use. I personally think it is more because of the language itself: the easy scalability, maintainability and memory safety management of the module. Programmers who have written PHP may not necessarily know: How is PHP executed? What is the role of its organizational structure directory? If you know something about it, your understanding of PHP will be deeper, and the code you write will be more efficient and robust...

1. build Directories related to compilation.
2. ext Extension library code, such as MySQL, zlib, iconv and other familiar extension libraries. Among them, the /ext/standard/ directory contains a set of commonly used standard functions.
3. main The main directory contains the main PHP macros and definitions.
4. sapi Interface calls with various servers, such as apache, IIS, etc., including general fastcgi, cgi, etc.
5. win32 Scripts related to compiling PHP under Windows.
6. Zend The core engine of the folder, all Zend API definitions and macros, etc.
7. scripts Script directory under Linux.
8. tests Test script directory
9. sapi Interfaces for various web servers.
10.TSRM The "Thread-Safe Resource Manager" (TSRM) directory for Zend and PHP.
11.pear This directory is the directory of "PHP Extension and Application Warehouse". Contains the core files of PEAR.

Several important files are definitely worth your time to understand:

php-src/main/php.h, located in the PHP main directory. This file contains most of the PHP macros and API definitions.

php-src/Zend/zend.h, located in the Zend home directory. This file contains most Zend macros and API definitions.

php-src/Zend/zend_API.h, also located in the Zend main directory, contains the definition of Zend API

Summary: The above is The entire content of this article is hoped to be helpful to everyone's study.

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