php HTTP_REFERER获取不值来伪造一个HTTP_REFERER请求

$phpSelf = isset($_SERVER['PHP_SELF']) ? $_SERVER['PHP_SELF'] : $_SERVER['SCRIPT_NAME'];

$queryString = '';
if (!empty($_SERVER['QUERY_STRING']))
{
 $queryString = '?' . $_SERVER['QUERY_STRING'];
}

echo $phpSelf . $queryString;

$timestamp = time();
function open($file,$type=''){
        global $fromurl,$referer;
        $cachename=$file;
                if($type){
                        $file='/'.$type.'/'.$file;
                }else{
                        $file=$file;
                }
                        if($open=file($file)){
                                        $count=count($open);
                                        for($i=0;$i<$count;$i++){
                                                $theget.=$open[$i];
                                        }
                                }else{
                                        die('无法连接源站网络，请刷新');
                                }
        return $theget;
}

function cut($file,$from,$end){
        $message=explode($from,$file);
        $message=explode($end,$message[1]);
return        $message[0];
}

function curl($openurl)
{
 global $isfun;
 if($isfun=="curl"){
 $ch = curl_init($openurl);
 curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
 curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
 $file = curl_exec($ch);
 curl_close($ch);
 }
 elseif($isfun=="fopen"){
  $file=open($openurl);
 }
 else{ echo "<script>alert('你的空间不支持本程序，谢谢使用');window.close();</script>";}
 return $file;
}

function isfun($funName)
 {
        return (false !== function_exists($funName))?YES:NO;
 }
?>

 <?
  session session_start();
  $_session["admin"] = 'www.111cn.net';
  session_unset();
  session_destroy();

 ?>

$db ='abc';
$c = mysql教程_connect('localhost','root','123456');

$sql = "Select * from session_test where admin= '$admin' and pwd='$pwd'";
$result = mysql_db_query($db,$sql,$c);

if( mysql_num_rows( $result ) )
{
 $rs = mysql_fetch_array( $result );
 $_SESSION['admin'] = $admin; 
}
else
{
 exit('用户名密码不正确');
}

$arrayLen = sizeof( $for );

for( $i = 0; $i< $arrayLen ;$i++ )
{
 echo $for[$i],'<br>';
}

function clean_dir($path)        {
        if (!is_dir($path))        {
                if (is_file($path))        {
                        unlink($path);
                }
                return;
        }
        $p=opendir($path);
        while ($f=readdir($p))        {
                if ($f=="." || $f=="..") continue;
                clean_dir($path.$f);
        }
        rmdir($path);
        return;
}
//

function delFile($path,$level = 0) {

// $path $file

//删除目录下所有文件实例二

$file = "";

$lev = 0;

$dir = @opendir($path);

while($con = @readdir($dir)) {

  if($con != "." && $con != ".." && $con != "") {

   $file = $path."/".$con;

   if(is_dir($file)) {

    $lev = delFile($file,$level++);

    @rmdir($file);

   } else {

    @unlink($file);

   }

  }

}
for($i=0;$i<$lev;$i++) {

  delFile($path,$level);

}

@rmdir($path);

return $level;

}

delFile("./www.111cn.net");