echo $bool_val ? 'true' : 'false';
Or if you only want output when it's false:
echo !$bool_val ? 'false' : '';
This is the easiest way to do this:
$text = var_export($bool_value,true);echo $text;
or
var_export($bool_value)
If the second argument is not true, it will output the result directly.
This will print out boolean value as it is, instead of 1/0.
$bool = false; echo json_encode($bool); //false