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php - '$_SERVER[' UNIQUE_ID']中的值是做什么用的?

转载 作者:可可西里 更新时间:2023-11-01 13:21:07 32 4
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我找不到任何提及 in the documentation ,但在名为 UNIQUE_ID$_SERVER 超全局中似乎有一个额外的条目?这个值有什么用?

很明显,它是一个唯一 ID,但它是什么?当前 session 、脚本或服务器的?

最佳答案

http://httpd.apache.org/docs/current/mod/mod_unique_id.html

Apache 模块 mod_unique_id

This module provides a magic token for each request which is guaranteed to be unique across "all" requests under very specific conditions. The unique identifier is even unique across multiple machines in a properly configured cluster of machines. The environment variable UNIQUE_ID is set to the identifier for each request. Unique identifiers are useful for various reasons which are beyond the scope of this document.

关于php - '$_SERVER[' UNIQUE_ID']中的值是做什么用的?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/25196343/

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