This tutorial for upload bigger file split into different part when it will upload and after complete upload it will combine to one file so it your bigger file will upload fast to your upload server. this is use for upload the bigger file to server.
Download the file upload library from here. click here for download
Now run this code in your php server. it will give option for browse the file, where you can browse multiple file for upload to you server
Now you can upload your bigger file with out form submission in php and without any php restriction for upload max file in php server.