php - Downloading large files (~400MB) stops prematurely in production, works fine on development server -

recently ran problem on larger file downloads in php. php running cgi on zeus server. tried in vain. like:

set_time_limit(0); ini_set('max_execution_time',0); 

the problem after downloading 4-5mb, downloading stops without warning. however, when run code locally works charm. me out of problem.

look in php.ini file on zeus server , local box. check

upload_max_filesize = ?? 

or the:

post_max_size = ?? 

values on both servers. see if different.