note 93673 added to function.session-start

Be warned that depending on end of script to close the session will effectively serialize concurrent session requests. Concurrent background "data retrieval" (e.g. applications such as AJAX or amfphp/Flex) expecting to retrieve data in parallel can fall into this trap easily. Holding the session_write_close until after an expensive operation is likewise problematic. To minimize effects, call session_write_close (aka session_commit) as early as practical (e.g. without introducing race conditions) or otherwise avoid the serialization bottleneck. ---- Server IP: 209.41.74.194 Probable Submitter: 70.132.10.21 ---- Manual Page -- http://www.php.net/manual/en/function.session-start.php Edit -- https://master.php.net/note/edit/93673 Del: integrated -- https://master.php.net/note/delete/93673/integrated Del: useless -- https://master.php.net/note/delete/93673/useless Del: bad code -- https://master.php.net/note/delete/93673/bad+code Del: spam -- https://master.php.net/note/delete/93673/spam Del: non-english -- https://master.php.net/note/delete/93673/non-english Del: in docs -- https://master.php.net/note/delete/93673/in+docs Del: other reasons-- https://master.php.net/note/delete/93673 Reject -- https://master.php.net/note/reject/93673 Search -- https://master.php.net/manage/user-notes.php