Question

I have the following code, what is the easiest way to check if $data has something in it?

$handle = fopen($_FILES['uploaded_file']['tmp_name'], "rb");

$data = fread($handle, filesize($_FILES['uploaded_file']['size']));

when I do

file_exists($_FILES['uploaded_file']['tmp_name']

it prints out 1? does 1 mean exists?

Answer 1

in some languages 1 and 0 represent boolean values

1 as true
0 as false

if(1) {
 //do something
} 

equal to

if(true) {
 //do something
}