There are such scripts that process data, and then you need to return to the previous page, do through

public static function goback () {
    If (@ $ _ Server ['http_referer']! = null) {
      Header ("Location:". $ _ Server ['http_referer']);
    }
    Sys :: gohome ();
  }

But always triggers SYS :: gohome ();

What can be wrong here?

Answer 1, Authority 100%

found,

if (...) {
  Header ("Location:". $ _ Server ['http_referer']);
}
Sys :: gohome ();

It turns out after header () , execution continues, it was necessary to write via ELSE

Answer 2

Try to use after the header function ($ ST); Function Function PHP Script EXIT ();