PHP：我需要一个类似数据库的解决方案，将数据存储在本地文件系统中
这是一个相当长的故事，但简而言之，我需要将数据库的一部分存储在本地文件系统中。我不能使用像 MySQL 这样的普通数据库，也不能使用 XML 文件（理论上我可以使用 XML-s，但它们不够灵活，我需要一些非常复杂的 PHP 代码层来使 XML-s 可用）。是否有某种解决方案允许将多个数据库表移动到文件系统并对其进行正常操作？
几年前我使用过平面文件，它们非常接近我的需要。然而，我不喜欢平面文件的是它们很粗糙 - 你需要手动完成所有操作，你不能只做“从某个表中选择名称，其中年龄> 30”之类的事情，而是需要手动浏览文件并选择所需的条目。
那么，您能否建议一些模仿 SQL 但将所有内容存储在本地文件中的解决方案。此外，这不应该是非常奇特的东西，因为该产品将部署在许多随机主机上，并且通常我们无法控制那里安装的内容。
感谢您的帮助！
It's a rather long story but to make it short I need to store a part of my database locally, in the filesystem. I can't use normal database like MySQL and I can't use XML files (theoretically I can use XML-s but they are not flexible enough, I will need some very complex layer of PHP code to make XML-s usable). Is there some kind of solution which will allow to move several DB tables to filesystem and do normal operations with them?
I worked with flat files years ago and they are very close to what I need. However what I didn't like about flat files is that they are crude - you need to do everything manually, you can't just do something like "SELECT name FROM some_table WHERE age>30", instead you need to manually go through file and select the required entries.
So, could you suggest some solution that imitates SQL but stores everything in a local file. Also this shouldn't be something very exotic because the product will be deployed on many random hostings and usually we don't have control over what is installed there.
Thanks for any help!
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您需要的是 SQLite：http://www.sqlite.org/ 它在 PHP 中得到了很好的支持：< a href="http://php.net/manual/en/book.sqlite3.php" rel="nofollow">http://php.net/manual/en/book.sqlite3.php
What you need is called SQLite: http://www.sqlite.org/ It's well supported within PHP: http://php.net/manual/en/book.sqlite3.php
Gladius DB 是一个用纯 PHP 编写的快速高效的 PHP 平面文件数据库引擎；它的 SQL 语法与中间 SQL92 的子集兼容。您不需要任何特定的扩展即可使其工作，并且它与 adoDB lite 驱动程序捆绑在一起。
Gladius DB is a fast and efficient PHP flatfile database engine written in pure PHP; its SQL syntax is compatible with a subset of intermediate SQL92. You will not need any specific extension to have it work, and it is bundled with an adoDB lite driver.