(PHP 3>= 3.0.17, PHP 4 >= 4.0.3)
is_uploaded_file -- Tells whether the file was uploaded via HTTP POST.
Description
bool is_uploaded_file (string filename)
This function is available only in versions of PHP 3 after PHP
3.0.16, and in versions of PHP 4 after 4.0.2.
Returns true if the file named by filename was
uploaded via HTTP POST. This is useful to help ensure that a
malicious user hasn't tried to trick the script into working on
files upon which it should not be working--for instance,
/etc/passwd.
This sort of check is especially important if there is any chance
that anything done with uploaded files could reveal their
contents to the user, or even to other users on the same
system.
See also move_uploaded_file(), and the section
Handling file uploads
for a simple usage example.
Manual: is_uploaded_file
