如题
When should you use quotation marks? When to use single quotes? When do you use double quotes? -PHP Chinese website Q&A-When should quotation marks be used? When to use single quotes? When do you use double quotes? -PHP Chinese website Q&A
Please watch and learn.
一般来说单引号和双引号没什么区别，比较建议使用单引号，速度会快一些.
引号代表里面的内容是字符串，如果是变量之类的就不需要用引号了.
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
When should you use quotation marks? When to use single quotes? When do you use double quotes? -PHP Chinese website Q&A-When should quotation marks be used? When to use single quotes? When do you use double quotes? -PHP Chinese website Q&A
Please watch and learn.
一般来说单引号和双引号没什么区别，比较建议使用单引号，速度会快一些.
引号代表里面的内容是字符串，如果是变量之类的就不需要用引号了.