note 54839 added to function.session-start

Because session_start() does indeed prevent another page using session_start() from running until the first one is done, i use session_write_close() before doing any operation that takes significant time. For instance, session_write_close() worked as a lifesaver for me when automatically uploading files to a user (forcing a download instead of a link). When files are large, my site was not able to upload more than one file at a time to a user. By using session_write_close() before beginning the file upload, my users can now download as many big files as they like, at the same time. Example: <? session_start(); /* Do session stuff here; security; logging; etc. */ session_write_close(); /* NOW write out the requested file. */ header("Content-type: audio/x-mpeg"); /* or whatever type */ header("Content-Disposition: attachment; filename=" . $filename); header("Content-Length: " . $filesize); header("Content-Transfer-Encoding: binary\n\n"); header("Pragma: no-cache"); header("Expires: 0"); $file_contents = file_get_contents($filepath); print($file_contents); ?> ---- Manual Page -- http://www.php.net/manual/en/function.session-start.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+54839 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+54839&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+54839&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+54839&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+54839&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+54839&report=yes&reason=non-english Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+54839&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+54839&report=yes Search -- http://master.php.net/manage/user-notes.php