symfony2

I have written a Symfony2(PHP MVC Framework) script to download a zip file from the server. But the file download stops in the midway. I have increased the max_execution_time in apache configuration. Still the problem is persisting. Do anyone have the quick fix for this? Thanks in advance.

I use Mongodb. and create query. createAt field type is timestamp. ex) createAt => new MongoTimestamp(1361925805, 0), My query is ex) ... ->field('createAt')->lt(1361925805) ... but result is array(0). ex) select * from aaa where createAt < '125123123123' how to make mongodb...