PHP printed boolean value is empty, why?

Question

I am new to PHP. I am implementing a script and I am puzzled by the following:

$local_rate_filename = $_SERVER[\'DOCUMENT_ROOT\'].\"/ghjr324l.txt\";
$local_r         


        

Answer 1

About converting a boolean to a string, the manual actually says:

A boolean TRUE value is converted to the string "1". Boolean FALSE is converted to "" (the empty string). This allows conversion back and forth between boolean and string values.

A boolean can always be represented as a 1 or a 0, but that's not what you get when you convert it to a string.

If you want it to be represented as an integer, cast it to one:

$intVar = (int) $boolVar;