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[2017-05-06 09:46 UTC] gollumben at gmx dot de
Description:
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When starting a session with a certain name, closing it and starting a session with a different name, the session ID is not changed. I find this misleading. I use cookies for the session ID storage and with this procedure there will be two cookies with different names with the same session ID.
In my opinion, PHP should create a new session ID for a new session with a different name. This also makes makes sense from a different point of view: When starting a session with a different name, PHP will want to look for the cookie with the other name.
Admitting, the practice of using multiple sessions within one script is not be the best.
Test script:
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session_name("session1");
session_start();
echo session_name() ." ". session_id() ."<br>";
session_write_close();
session_name("session2");
session_start();
echo session_name() ." ". session_id(); //the ID will be the same as before
Expected result:
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The second session ID should be different from the first one.
Actual result:
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The second session ID and the first are the same.
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Last updated: Wed Nov 05 20:00:01 2025 UTC |
This is not a bug. The session name and id are different entities which can be changed independently of each other. Changing one does not automatically change the other. If you want to change the name then use session_name(). If you want to change the id then use session_regenerate_id(). The correct code to do what you want is as follows: session_start(); // obtains $_SESSION array … do stuff session_name('newname'); // change session name only session_regenerate_id(); // change session id only session_write_close(); // required otherwise the next call will to // session_start() will fail session_start(); // starts session with new name and id and // old $_SESSION array