两次使用session_start [英] Using session_start twice
问题描述
我有一个很愚蠢的问题(我相信):
I have a pretty dumb question (I believe):
如果我要开始2个会话，两次调用session_start()，会发生什么情况?例如，我有一个User类，在其中启动用户的会话，而有一个Error类，在其中启动另一个会话，因此我可以在其中存储错误和通知，并将它们传递给其他页面.
What would happen, if I were to start 2 sessions, calling session_start() twice? For example, I have a class User, where I start user's session, and a class Error, in which I start another session, so I can store errors and notifications in them and pass them to other pages.
我能遇到问题吗，这有效吗?
Could I run into a problem, and is this efficient?
推荐答案
PHP不支持多个同时会话.除非现有会话(通过session_destroy())被破坏，否则在请求中第二次调用session_start()不会执行任何操作.
PHP doesn't support multiple simultaneous sessions. Calling session_start() a second time in a request doesn't do anything unless the existing session was destroyed (via session_destroy()).
session_start()创建会话或恢复当前会话，具体取决于通过GET或POST请求传递或通过cookie传递的会话标识符.
session_start()creates a session or resumes the current one based on a session identifier passed via a GET or POST request, or passed via a cookie.
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