I've seen this a lot: $fp = fopen($filepath, "w") or die();
But I can't seem to find any real documentation on this "or" syntax. It's obvious enough what it does, but can I use it anywhere? And must it be followed by die()? Are there any caveats to using or when you could use something like
if (file_exists($filepath))
$fp = fopen($filepath,"r");
else
myErrMessage();
I know it seems like a silly question, but I can't find any hard and fast rules for this. Thanks.
It's a logical operator and can be used in any logical expression.