I'm building a functionality which displays a message dynamically, i.e if the forms are correctly filled or not. I came across this piece of code and I don't understand how does it really work.

if(true) {
$this->flash('Yay ! File uploaded successfully', 'success');
} else {
$this->flash('There is some error', 'error');

From what I've already looked for, I guess it's used to see whether or not there is an array available, since PHP returns false if there isn't one. (according to PHP manual ) I still don't get how does this work, there is no variables such as if($foo) but just plain boolean on this condition.

And yes, it seems to work as intended.

Thanks for your enlightments.