NYCPHP Meetup

[Greg Faber]

Good morning people,

Just a quick question, for which I'd like a quick answer.

When I wrote (uh... copy/pasted) my script to upload a file, I included 
the usual safeguards they mention in all the books: check to see if 
something is uploaded, verify file size != 0 and verify file type. Now, 
let's say I want to be able to upload 5 files at a time, must I verify 
every possible combination of uploaded/not-uploaded file or is there a 
function out there that was made specifically to handle this? (if there 
isn't I'll just bite the bullet and do it, I'm just thinking that this 
is so common someone MUSt have done it before, right?) IF I don't make 
sense, this is what I mean:

< example with only 1 file upload at a time>:
if ($_FILES['userfile']['tmp_name']=="") {
	echo "no file uploaded";
	exit;
}
if ($_FILES['userfile']['size']=="0") {
	echo "file size is 0";
	exit;
}

< example with only 2 files upload at a time>:
if ($_FILES['userfile_1']['tmp_name']=="" && 
$_FILES['userfile_2']['tmp_name']=="") {
	echo "no file uploaded";
	exit;
}
if ( ($_FILES['userfile_1']['size']=="0" && 
$_FILES['userfile_1']['tmp_name']!="" ) || 
($_FILES['userfile_2']['size']=="0" && 
$_FILES['userfile_2']['tmp_name']!="" )) {
	echo "file size is 0";
	exit;
}


If you have the possibility to upload 5 files at the same time, looks 
like things can get pretty hairy. Is it just stupid to allow users to 
upload multiple files at the same time? Just some quick thoughts 
please.

Grazie,
Greg