What are the keywords of variables and what are reserved words? Please give me an easy-to-understand explanation. -PHP Chinese website Q&A-What are the keywords of variables and what are reserved words? Please give me an easy-to-understand explanation. -PHP Chinese website Q&A
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
What are the keywords of variables and what are reserved words? Please give me an easy-to-understand explanation. -PHP Chinese website Q&A-What are the keywords of variables and what are reserved words? Please give me an easy-to-understand explanation. -PHP Chinese website Q&A
Please watch and learn.
保留字、关键字是在语言中有特定含义，成为语法中一部分的那些字，使用者不能再将这些字作为变量名或过程名使用。
保留字和关键字的区别是：一些保留字可能并没有应用于当前的语法中，在未来可能会被语法使用。