You should configurate post_max_size and upload_max_filesize in php.ini to allow upload large files. example:
upload_max_filesize = 128M post_max_size = 128M memory_limit = 256M max_execution_time = 3600
Unsecured PHP script that allows to upload big files faster on a server by splitting the file and send them through HTTP protocol
PHP
You should configurate post_max_size and upload_max_filesize in php.ini to allow upload large files. example:
upload_max_filesize = 128M post_max_size = 128M memory_limit = 256M max_execution_time = 3600