[dvwa] file inclution

$stringing = "include|require|include_once|require_once";
$suspects = explode("|",$stringing);
//$punctuation = array("(",")","&","|","/","\\",";","file","data","filter");
//$suspects = array_merge($suspects,$punctuation);
$allnull = array();
for ($i = 0;$i<count($suspects);$i += 1){
    array_push($allnull,'Hacker');
}
$count = 0;
$file = str_replace($suspects,$allnull,$file,$count);
if ($count>0){
    die("no inclution, go out");
}