Качаю файл, а он в результате пустой, хотя на локале у меня все работает

$file_name='us_ban/ban'.$fo.'.gif';
foreach ($_FILES as $key=>$value){
  if (!$value[error] && file_exists($value[tmp_name])) {
  $maxsize=14000;
$size=filesize($value[tmp_name]);
if ($size > $maxsize) {
errfile();}else{
move_uploaded_file($value[tmp_name], $file_name);
$stroka1='insert into addforum values('$log','$name','$title','$data','$fo');';
        $result1=mysql_query($stroka1);
$stroka2='insert into ban values('$log','$url','$file_name','$fo');';
        $result2=mysql_query($stroka2);
 header('location:besedka.php');
  }
  }else{$stroka1='insert into addforum values('$log','$name','$title','$data','$fo');';
        $result1=mysql_query($stroka1);
$stroka2='insert into ban values('$log','$url','$file_name','$fo');';
        $result2=mysql_query($stroka2);
 header('location:besedka.php');}
  }

$file_name='us_ban/ban'.$fo.'.gif';
if (is_uploaded_file($file)){
copy($file,$file_name);
$stroka1='insert into addforum values('$log','$name','$title','$data','$fo');';
        $result1=mysql_query($stroka1);
$stroka2='insert into ban values('$log','$url','$file_name','$fo');';
        $result2=mysql_query($stroka2);
 header('location:besedka.php');
   }else{$stroka1='insert into addforum values('$log','$name','$title','$data','$fo');';
        $result1=mysql_query($stroka1);
$stroka2='insert into ban values('$log','$url','$file_name','$fo');';
        $result2=mysql_query($stroka2);
 header('location:besedka.php');}