Recommended courses on PHP execution principles

PHP Execution Principle PHP is a language with very simple application and extremely high development efficiency. Its weakly typed variables can save programmers a lot of time and energy in defining variables, type conversion, etc. It is a dynamic language suitable for web development. 1. Principles and characteristics of PHP design Multi-process model: This ensures that processes are not affected by each other, and the resource utilization of the process is faster and more convenient. Weakly typed language: Unlike strongly typed languages ​​such as C, C++, and Java, PHP The type of the variable is not determined at the beginning. It is determined at runtime. Type conversion can be performed implicitly or explicitly. This makes it very flexible in development and the programmer does not need to pay attention to the variable. Type of problem Zend engine + component (ext) mode reduces the internal coupling middle layer (sapi) and isolates the web server and PHP. The syntax is simple and flexible, with few specifications. This has pros and cons. . . 2. PHP’s four-layer system PHP has a total of four-layer system from top to bottom: Zend engine: Zend is implemented in C as a whole and is the core part of PHP. It translates PHP code into executable opcode, processes and implements the corresponding Processing method (

1. PHP execution principle

## Introduction: PHP execution principle PHP is a language with very simple application and extremely high development efficiency. Its weakly typed variables can save programmers a lot of time and energy in defining variables, type conversion, etc. It is an application. A dynamic language for web development. 1. Principles and characteristics of PHP design Multi-process model: This...

2. In-depth analysis of PHP execution principles (2): Function Compilation of PHP encryption function PHP function reference PHP delay function

Introduction: PHP, function: in-depth analysis of PHP execution principle (2): Compilation of function: This article only discusses Pure functions do not include methods. Methods will be studied together in classes and objects. I want to explain how functions are correctly compiled into op instructions, how parameters are passed, and how to simulate the call stack in zend vm. How to switch scopes, etc., is indeed a very large topic, but in order to understand the principles of PHP, it must be overcome. The study of functions can be roughly divided into two parts, mainly the compilation of the function body. Involves how to convert functions into zend_op instructions. The second part is to study function calls, involving the compilation of function call statements

3. apache php mysql in-depth analysis of php execution Principle (4): Function call

Introduction: apache php mysql:apache php mysql In-depth analysis of PHP execution principle (4): Function call: This chapter begins to study PHP For function calling and execution, let's first look at how the function call statement is compiled. In the previous chapter, we figured out which zend_op instructions the function body will be compiled to generate. This chapter will study which zend_op instructions the function call statement will generate. Wait for the following chapters. Then analyze the details of PHP runtime based on these OP instructions. The source code is still taken from PHP5.3.29. Review the PHP code example used before:

4. In-depth analysis of php execution principle (4): Function calling, in-depth analysis of php_PHP tutorial

Introduction: In-depth analysis of PHP execution principle (4): Function calling, in-depth analysis of PHP. In-depth analysis of PHP execution principles (4): Function calling, in-depth analysis of PHP This chapter begins to study the calling and execution of functions in PHP. First, let’s look at how function call statements are compiled. Let’s

5. In-depth analysis of the PHP execution principle (4): Function calling, in-depth analysis of PHP

Introduction: In-depth analysis of PHP execution principle (4): Function calling, in-depth analysis of PHP. In-depth analysis of PHP execution principles (4): Function calling, in-depth analysis of PHP This chapter begins to study the calling and execution of functions in PHP. First, let’s look at how function call statements are compiled. Our previous

6. Compilation of functions

Introduction: In-depth analysis of PHP execution principles (2): Compilation of functions This article only discusses pure functions and does not include methods. Methods will be studied together in classes and objects. I want to explain clearly how functions are correctly compiled into op instructions in zend vm, how parameter transfer occurs, how to simulate the call stack, how to switch scopes, etc. It is indeed a very large topic. But in order to understand the principles of php, you must conquer it. The study of functions can be roughly divided into two parts. The first part is the compilation of the function body, which mainly involves

7. In-depth analysis of PHP execution principle (2): Compilation of functions, in-depth analysis of PHP

Introduction: In-depth analysis of PHP execution principle (2): Compilation of functions, in-depth analysis of PHP. In-depth analysis of PHP execution principles (2): Compilation of functions, in-depth analysis of PHP This article only discusses pure functions and does not include methods. Methods will be studied together in classes and objects. Want to

8. In-depth analysis of the PHP execution principle (2): Compilation of functions - driftcloudy

Introduction: In-depth analysis of PHP execution principle (2): Compilation of functions - driftcloudy

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