I\'m wondering how PHP handles a file upload. I\'v read a file upload will be split in chunks and will be assembled after the upload has finished. Is there any verification of t
PHP does read the file in chunks but it doesn't write them to individual files and then recombine them, it keeps writing them to the same temporary file which is the one you get in $_FILES.
It's the same for mod_php and CGI.
Here's the responsible code: http://svn.php.net/viewvc/php/php-src/branches/PHP_5_3/main/rfc1867.c?revision=307583&view=markup#l1065