> For the complete documentation index, see [llms.txt](https://antonshevchuk.gitbook.io/php-for-beginners/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://antonshevchuk.gitbook.io/php-for-beginners/50_io.md).

# 50% IO

- [Файловая система](https://antonshevchuk.gitbook.io/php-for-beginners/50_io/failovaya-sistema.md)
- [Сеть](https://antonshevchuk.gitbook.io/php-for-beginners/50_io/set.md)
- [Stream](https://antonshevchuk.gitbook.io/php-for-beginners/50_io/stream.md)