Doc #68221 [NEW]: session.save_path has bad advice for directory level depths

From: greenreaper at hotmail dot com Operating system: PHP version: Irrelevant Package: Documentation problem Bug Type: Documentation Problem Bug description:session.save_path has bad advice for directory level depths Description: ------------ --- From manual page: http://www.php.net/session.configuration --- The description of session.save_path gives an infeasible suggestion for the depth of the session directory tree: "There is an optional N argument to this directive that determines the number of directory levels your session files will be spread around in. For example, setting to '5;/tmp' may end up creating a session file and location like /tmp/4/b/1/e/3/sess_4b1e384ad74619bd212e236e52a5a174If ." People may try to use this kind of figure without thinking about what they're doing. They probably won't be *able* to create 64^5 directories, but once they find that out, they may be tempted to split the difference - even 64^3 is over 1Gb and 256k inodes on most systems, just for the structure. Something like "If you're considering a value beyond 1 or 2, you may want to look into a different session.save_handler." would be helpful. Also, the dir_indexes option for ext2/3/4 can help with large session directories, though I don't know if PHP gives such specific advice. -- Edit bug report at https://bugs.php.net/bug.php?id=68221&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=68221&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=68221&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=68221&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=68221&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=68221&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=68221&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=68221&r=needscript Try newer version: https://bugs.php.net/fix.php?id=68221&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=68221&r=support Expected behavior: https://bugs.php.net/fix.php?id=68221&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=68221&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=68221&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=68221&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=68221&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=68221&r=dst IIS Stability: https://bugs.php.net/fix.php?id=68221&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=68221&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=68221&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=68221&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=68221&r=mysqlcfg