problem with the use of sprint

Is anyone can help me about why I am getting this error?
PHP Warning: sprintf(): Too few arguments in but no sprintf in

The related function is:

function httpcheckif(){
  return sprintf(
    "%s://%s%s",
    isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] != 'off' ? 'https' : 'http',
    $_SERVER['SERVER_NAME']
  );
}

PHP:

 

You have one too many %s in the sprintf.
The correct line should be:

"%s://%s",

Code (markup):

 

Thanks

 

printf is one of those commands I never really understood why they exist in the first place.... as if string addition is so magically hard or that it's somehow worth running a parser under a parser under an interpreter.

Which is why I'd have scrapped that and simply done:

function httpcheckif(){
	return (
		isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] != 'off' ? 'https' : 'http'
	) . '://' . $_SERVER['SERVER_NAME'];
}

Code (markup):

Even in C all "printf" type commands are is a legacy of the fact that the early compilers were all single-pass trash... that it even exists in modern languages like PHP is more a monument to stupidity than it is functionality.