Deep understanding of PHP source directory structure and function description _php tips

This article describes the PHP source directory structure and functional description. Share to everyone for your reference, specific as follows:

PHP is the first in the Web development language, not only because of the simple syntax, easy to get started. I personally think more because of the language itself: the scalability of the module, maintainability and memory security management characteristics. Programmers who write PHP don't necessarily know: how does PHP do it? What is the role of the directory of organizational structure? If you know something about it, you'll get a deeper understanding of PHP, and the code you write will be more efficient and robust ...

1. build and compile-related directories.
2. ext Extension Library code, such as MySQL, zlib, iconv, etc. we are familiar with the extension library. The standard set of functions is commonly used in the/ext/standard/directory.
3. Main Main directory contains the major PHP macros and definitions.
4. SAPI and a variety of server interface calls, such as Apache, IIS, etc., also contains the general fastcgi, CGI and so on.
5. Win32 and Windows compile PHP-related scripts.
6. Zend folder core engine, all Zend API definitions and macros.
7. Scripts Linux under the script directory.
8. tests test script directory
9. SAPI The interfaces of various WEB servers.
tsrm Zend and PHP's thread Security Explorer (TSRM) directory.
Pear This directory is the "PHP extension and Application Warehouse" directory. Contains the core files of pear.

Several of these important documents are definitely worth your time to understand:

Php-src/main/php.h, located in the PHP home 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 of the Zend macros and API definitions.

php-src/zend/zend_api.h, also located in the Zend home directory, contains the definition of the Zend API

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I hope this article will help you with the PHP program design.