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It can be displayed normally without it
This is a W3C standard, and it can also reduce web page download time. Code optimization is not done by removing tags.
In PHP, if it is pure PHP code, it is generally recommended to omit?> to avoid unnecessary errors.
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
This is a W3C standard, and it can also reduce web page download time. Code optimization is not done by removing tags.
In PHP, if it is pure PHP code, it is generally recommended to omit?> to avoid unnecessary errors.