Course Overview: Understanding and Implementing a PHP Interpreter in C

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In this course we first explore the background and characteristics of the PHP language and the purpose and operation of the PHP interpreter. Then we analyze the core components of the interpreter such as lexical analysis, syntax analysis, and the virtual machine, delving into their internal implementation mechanisms.

The curriculum also covers how to write each module of the PHP interpreter in C, including the lexer, parser, and virtual machine. Through hands‑on projects, students will build a simple PHP interpreter themselves, deepening their understanding of the interpreter’s source code.

By completing the course, students will gain a thorough grasp of the PHP interpreter’s working principles and internal architecture, master techniques for implementing a PHP interpreter in C, and develop analytical and problem‑solving abilities that improve overall programming competence and project practice.

Whether you are a beginner interested in PHP or a developer seeking deeper insight into the interpreter’s internals, this course provides valuable experience and inspiration. Let’s explore the mysteries of the PHP interpreter together and start the programming journey!

Chapter 1

Section 1 Introduction to source‑code reading tools and php‑src download

Section 2 PHP program execution methods

Section 3 Finding the entry function main in php‑cli and using gdb debugger (part 1)

Section 4 Finding the entry function main in php‑cli and using gdb debugger (part 2)

Section 5 Finding the entry function main in php‑cli and using gdb debugger (part 3)

Section 6 Finding the entry function main in php‑cli and using gdb debugger (part 4)

Section 7 php‑cli entry function source code: cli_sapi_module global variables