Мультизагрузка в разные папки...

if (isset($_POST['addbook'])) {
$newname = sha1(mt_rand());
$txtfile = './books/'.$newname.'.txt';
$zipfile = './archives/'.$newname.'.zip';
$imgfile = './thumbnails/'.$newname;
if ($_POST['title'] != '' && $_POST['authorname'] != ''
&& $_POST['authorfamily'] != '' && $_POST['booktype'] != ''
&& $_POST['bookcat'] != '' && $_POST['info'] != ''
&& $_POST['description'] != '') {
if (!empty($_FILES['image']['tmp_name']) && !empty($_FILES['txtfile']['tmp_name'])) {
if ($_FILES['image']['type'] == 'image/jpeg' || $_FILES['image']['type'] == 'image/png' || $_FILES['image']['type'] == 'image/gif' && $_FILES['txtfile']['type'] == 'text/plain') {
if ($_FILES['image']['type'] == 'image/jpeg') $suffix = '.jpg';
elseif ($_FILES['image']['type'] == 'image/png') $suffix = '.png';
elseif ($_FILES['image']['type'] == 'image/gif') $suffix = '.gif';
if (@copy($_FILES['image']['tmp_name'], $imgfile.$suffix) && @copy($_FILES['txtfile']['tmp_name'], $txtfile)) {
$check = fopen($txtfile,"rb");
$str = fread($check,512);
fclose($check);
$charsets = array('KOI8-R' => 0,'cp1251' => 0,'CP866' => 0,'ISO-8859-5' => 0,'MAC' => 0);
for ( $i = 0, $length = strlen($str); $i < $length; $i++ ) {
$char = ord($str[$i]);
//non-russian characters
if ($char < 128 || $char > 256) continue;
//CP866
if (($char > 159 && $char < 176) || ($char > 223 && $char < 242)) $charsets['CP866']+=3;
if (($char > 127 && $char < 160)) $charsets['CP866']+=1;
//KOI8-R
if (($char > 191 && $char < 223)) $charsets['KOI8-R']+=3;
if (($char > 222 && $char < 256)) $charsets['KOI8-R']+=1;
//WIN-1251
if ($char > 223 && $char < 256) $charsets['cp1251']+=3;
if ($char > 191 && $char < 224) $charsets['cp1251']+=1;
//MAC
if ($char > 221 && $char < 255) $charsets['MAC']+=3;
if ($char > 127 && $char < 160) $charsets['MAC']+=1;
//ISO-8859-5
if ($char > 207 && $char < 240) $charsets['ISO-8859-5']+=3;
if ($char > 175 && $char < 208) $charsets['ISO-8859-5']+=1;
}
arsort($charsets);
$charset = key($charsets);
$decode = iconv($charset,"UTF-8//IGNORE",file_get_contents($txtfile));
$utf8 = fopen($txtfile,"w");
fwrite($utf8,$decode);
fclose($utf8);
$in = array("а","б","в","г","д","е","ё","ж","з","и","й","к","л","м","н","о","п","р","с","т","у","ф","х","ц","ч","ш","щ","ъ","ы","ь","э","ю","я","А","Б","В","Г","Д","Е","Ё","Ж","З","И","Й","К","Л","М","Н","О","П","Р","С","Т","У","Ф","Х","Ц","Ч","Ш","Щ","Ъ","Ы","Ь","Э","Ю","Я"," ");
$out = array("a","b","v","g","d","e","e","zh","z","i","i","k","l","m","n","o","p","r","s","t","u","f","h","ts","ch","sch","sch","","y","","e","ju","ja","A","B","V","G","D","E","E","Zh","Z","I","I","K","L","M","N","O","P","R","S","T","U","F","H","Ts","Ch","Sch","Sch","","Y","","E","Ju","Ja","_");
$archfilename = str_replace($in,$out,$_POST['authorname']).'_'.str_replace($in,$out,$_POST['authorfamily']).'_'.str_replace($in,$out,$_POST['title']);
$dir = './prepare/'.$newname;
mkdir($dir);
@copy($txtfile, $dir.'/'.$archfilename.'.txt');
if (!empty($_FILES['pdffile']['tmp_name'])) @copy($_FILES['pdffile']['tmp_name'], $dir.'/'.$archfilename.'.pdf');
if (!empty($_FILES['docfile']['tmp_name'])) @copy($_FILES['docfile']['tmp_name'], $dir.'/'.$archfilename.'.doc');
if (!empty($_FILES['epubfile']['tmp_name'])) @copy($_FILES['epubfile']['tmp_name'], $dir.'/'.$archfilename.'.epub');
if (!empty($_FILES['fb2file']['tmp_name'])) @copy($_FILES['fb2file']['tmp_name'], $dir.'/'.$archfilename.'.fb2');
exec('cd '.$dir.'/ && zip -r ../.'.$zipfile.' ./');
if (file_exists($dir.'/'.$archfilename.'.txt')) unlink($dir.'/'.$archfilename.'.txt');
if (file_exists($dir.'/'.$archfilename.'.pdf')) unlink($dir.'/'.$archfilename.'.pdf');
if (file_exists($dir.'/'.$archfilename.'.doc')) unlink($dir.'/'.$archfilename.'.doc');
if (file_exists($dir.'/'.$archfilename.'.epub')) unlink($dir.'/'.$archfilename.'.epub');
if (file_exists($dir.'/'.$archfilename.'.fb2')) unlink($dir.'/'.$archfilename.'.fb2');
rmdir($dir);
$title = mysql_real_escape_string($_POST['title']);
$authorname = mysql_real_escape_string($_POST['authorname']);
$authorlastname = mysql_real_escape_string($_POST['authorlastname']);
$authorfamily = mysql_real_escape_string($_POST['authorfamily']);
$booktype = (int) ($_POST['booktype']);
$bookcat = (int) ($_POST['bookcat']);
$info = mysql_real_escape_string($_POST['info']);
$description = mysql_real_escape_string($_POST['description']);
$adddate = date('Y.m.d H:i:s');
$addstamp = time();
$filename = $newname;
$image = $newname.$suffix;
$viewcount = 0;
$rating = 0;
$query = 'INSERT INTO `books`
(`id`,`authorname`,`authorlastname`,`authorfamily`,`title`,`category`,`type`,`info`,`description`,`adddate`,`addstamp`,`filename`,`image`,`viewcount`,`rating`)
VALUES (NULL,"'.$authorname.'","'.$authorlastname.'","'.$authorfamily.'","'.$title.'",'.$bookcat.','.$booktype.',"'.$info.'","'.$description.'","'.$adddate.'",'.$addstamp.',"'.$filename.'","'.$image.'",'.$viewcount.','.$rating.')';
db::update($query);
if ($authorlastname == '') $authorlastname = '[не было задано]';
$replace['message'] = 'Книга успешно загружена! Еще?';
$replace['info'] = trim('Название книги: '.$title.'<br />
Имя автора: '.$authorname.'<br />
Отчество автора (опционально): '.$authorlastname.'<br />
Фамилия автора: '.$authorfamily.'<br />
Тип: '.$booktype.'<br />
Категория: '.$bookcat.'<br />
Картинко (image): '.$image.'<br />
<!-- Краткое описание: '.$info.'<br />
Полное описание: '.$description.'<br /> -->
');
}
else $replace['info'] = 'Файлы не скопировались - проверить права на папки!!!';
}
else $replace['info'] = 'Для картинок поддерживается типы: image/jpeg, image/png, image/gif.<br />Для файлов только text/plain!!! Тут: картинка '.$_FILES['image']['type'].', и файл: '.$_FILES['txtfile']['type'];
}
else $replace['info'] = 'Не все файлы добавлены!!! Файл: ['.$_FILES['txtfile']['tmp_name'].'] Картинко: ['.$_FILES['txtfile']['tmp_name'].']';
}
else $replace['info'] = 'Не все поля заполнены!!!';
$replace['links'] = '<a href="./?admin">Да ну нафик</a> ---|||||||--- <a href="?admin&newbook">Загрузим еще одну &raquo;&raquo;&raquo;</a>';
}

Почему она вываливается?неужели так нагружается сервер

Спасибо большое.