Bunlara hiç gerek yok
haber.php?Id='a olsa
ob_start();
$serkan=$_GET['id'];
$serkancakmak=intval($serkan);
if ( $serkancakmak == "0" ) {
header ("Location: http://www.google.com.tr/search?hl=tr&rlz=1B3GGLL_trTR373TR373&q=insan+ile+ hayvan+aras%C4%B1ndaki+fark&meta=&aq=0&aqi=g1&aql= &oq=%C4%B0nsan+ile+hayvan+aras%C4%B1nda&gs_rfai=") ;
}