WEB BASED UPLOAD SCRIPT

I need a script, which is USER FRIENDLY and can handle one or more files to be uploaded on a website. For example, after all input data fields required are fillfulled, the user either enter URL of a large file location or browse to it from he's hard disk. Now the script transfer the files via PHP.. and most of times when server is heavy loaded, it timeout or process get's killed by mpm worker due it's idling.. So i think a script which would connect on some other method like FTP or something like this would be nice.. Imagine there are like 30-50 pplz constantly online, adding files and uploading, so as another 1000 downloading.. average bandwith usage is 10mb/s 24/7 for download.. So what could be the other way of transfering files via WEB interface to a server, without loosing connection/timeouts etc.. PHP is not meant to do that, i think. (i have set up all the apache settings to higher limits, but still.. it's not the 100% way to transfer the files).