note 50148 added to features.file-upload

I followed the sample, and my upload php works find for small files less than few Mbytes in size. For any files larger than that, I get "POST /upload.php HTTP/1.1" 200 301 in the access log, and the upload fails, refreshing the upload web page. I searched the web, but I have not found answers yet. Could some expert help on this? Thank you. ---- Manual Page -- http://www.php.net/manual/en/features.file-upload.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+50148 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+50148&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+50148&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+50148&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+50148&report=yes&reason=useless Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+50148&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+50148&report=yes Search -- http://master.php.net/manage/user-notes.php