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This article introduces the relevant knowledge of "what is the concept of php architecture". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

1. Description

Php architecture is mainly composed of four systems, from bottom to top, by Zend engine, Extensions extension, SAPI interface and upper application.

2. Introduction of the system

Zend

Based on the upper API interaction forms supported by different environments, storage implements different input and output forms.

Sapi

Store PHP-related core code, such as memory management mentioned earlier.

Extensions extension

Commonly used built-in functions, standard libraries are implemented through extension, these are called PHP core extensions, users can also install PHP extensions according to their own needs.

Upper application

The PHP programs written by PHP programmers, whether running in Web or Cli mode, are upper-level applications, and the main job of PHP programmers is to write them.

What language is php php, a nested acronym, is the abbreviation of English Hypertext preprocessing language (PHP:Hypertext Preprocessor). PHP is a kind of HTML embedded language. PHP is somewhat similar to Microsoft's ASP. It is a scripting language that embeds HTML documents on the server. The style of the language is similar to C language, and now it is widely used by many website programmers.

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