Bug #80889 [NEW]: Cannot set save handler when session.save_handler is invalid

From: simon at podlipsky dot net Operating system: macos, debian PHP version: 8.0.3 Package: Session related Bug Type: Bug Bug description:Cannot set save handler when session.save_handler is invalid Description: ------------ When sesssion.save_handler is set to something unknown eg. - 'whatever' - 'memcached' when memcached is not installed - Value that reports `Warning: ini_set(): Session save handler "XXX" cannot be found for calling `ini_set('session.save_handler', 'XXX'); Then calling session_set_save_handler() has no effect. Test script: --------------- Set sesssion.save_handler to 'whatever' in php.ini ``` <?php $initHandler = ini_get('session.save_handler'); session_set_save_handler(new MyHandlerImpl()); $setHandler = ini_get('session.save_handler'); echo 'Init Handler is: ' . $initHandler . PHP_EOL; echo 'Set Handler is: ' . $setHandler . PHP_EOL; ``` Expected result: ---------------- Init Handler is: whatever Set Handler is: user Actual result: -------------- Init Handler is: whatever Set Handler is: whatever -- Edit bug report at https://bugs.php.net/bug.php?id=80889&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=80889&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=80889&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=80889&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=80889&r=needscript Try newer version: https://bugs.php.net/fix.php?id=80889&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=80889&r=support Expected behavior: https://bugs.php.net/fix.php?id=80889&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=80889&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=80889&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=80889&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=80889&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=80889&r=dst IIS Stability: https://bugs.php.net/fix.php?id=80889&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=80889&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=80889&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=80889&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=80889&r=mysqlcfg