同一PHP脚本的实例可以交叉通信吗？ [英] Can instances of the same PHP script cross communicate?

问题描述

我假设对于每个页面请求，网络服务器（例如Apache）都会在内存中创建脚本的新实例。这些实例在运行时可以相互通信吗？并传递数据吗？

I'm assuming that for every page request, the webserver (eg. Apache) creates a new instance of a script in memory. Can these instances communicate with each other while running? and pass data too?

推荐答案

如果要在PHP脚本之间传递数据，建议使用memcached或数据库。或许还有APC。

If you want to pass data between scripts in PHP I suggest using either memcached or a database. Or possibly APC.

如果脚本属于同一会话，则理论上它们可以通过该会话进行通信，但这在大多数情况下实际上是一种单向通信，因为仅一个脚本可以随时访问该会话（session_start（）锁定会话，直到该脚本隐式或显式结束会话为止。）

If the scripts belong to the same session, they could theoretically communicate via the session but this would be effectively a one-way communication in most cases because only one script can access the session at any one time (session_start() locks the session until that script ends the session implicitly or explicitly).

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