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PHP RFC: Add session_gc()

  • Version: 0.9
  • Create Date: 2014-03-13
  • Modify Date: 2016-04-07
  • Author: Yasuo Ohgaki, yohgaki@ohgaki.net
  • Status: Discussion


Current session GC depends on probability. Thus, low traffic sites would not delete expired session data and could be usable as valid session. Traffic varies day and night time for high traffic sites. Chances are high that expired session may not be deleted as it should.

The best way to purge old session data is executing GC periodically.


  • Add session_gc() API.
  • Document calling session_gc() periodically is the best practice.

Backward Incompatible Changes


Proposed PHP Version(s)

PHP 7.1


VOTE: 2016/04/08 - 2016/04/15

Add session_gc() function
Real name
Final result:
This poll has been closed.

This project requires a 2/3 majority.

Patches and Tests


After the project is implemented, this section should contain

  1. the version(s) it was merged to
  2. a link to the git commit(s)
  3. a link to the PHP manual entry for the feature
rfc/session-gc.1460008950.txt.gz · Last modified: 2017/09/22 13:28 (external edit)