<?	
function uploadHandle($file_form = 'error', $max_file_size = 100, $valid_extensions = array(), $upload_dir = '.', $max_width = 0)  
{  
	$error = null;  
	$info  = null;  
	$max_file_size *= 1024; // Размер
	$quality = 85;			// Качество
	$quality_png = 9;		// Качество PNG
	
	if ($_FILES[$file_form]['error'] === UPLOAD_ERR_OK)  
	{  
		// проверяем расширение файла  
		$file_extension = pathinfo($_FILES[$file_form]['name'], PATHINFO_EXTENSION);  
		if (in_array($file_extension, $valid_extensions))  
		{  
			// проверяем размер файла  
			if ($_FILES[$file_form]['size'] < $max_file_size)  
			{  
				// Вырезаем разные знаки
				$_FILES[$file_form]["name"] = translit($_FILES[$file_form]["name"]);
				
				$destination = $upload_dir .'/'.$_FILES[$file_form]['name'];  
				
				if (copy($_FILES[$file_form]['tmp_name'], $destination)) {  

					$what = getimagesize( $_FILES[$file_form]['tmp_name']);
					// параметры файла
					if ($what['mime'] == 'image/gif')
						$o_im = imageCreateFromGIF($_FILES[$file_form]['tmp_name']) ;
					if ($what['mime'] == 'image/jpeg')
						$o_im = imageCreateFromJPEG($_FILES[$file_form]['tmp_name']) ;
					if ($what['mime'] == 'image/png')
						$o_im = imageCreateFromPNG($_FILES[$file_form]['tmp_name']) ;

					$width = imagesx($o_im);
					$height = imagesy($o_im);

					if (!empty($max_width) and $width > $max_width){
						$newwidth = $max_width;
						$newheight = round($height * $newwidth / $width) ;
					}
					else{
						$newheight = $height;
						$newwidth = $width ;
					}
					
					$t_im = imageCreateTrueColor($newwidth,$newheight);
					if ($what['mime'] == 'image/png') {
						// Прозрачность
						setTransparency($t_im,$o_im);
						
						imagecopyresampled($t_im, $o_im, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);
						ImagePNG($t_im, $upload_dir .'/'. $_FILES[$file_form]['name'],$quality_png);
					} else {
						//изменяем размер
						imageCopyResampled($t_im, $o_im, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);
						imageJPEG($t_im, $upload_dir .'/'. $_FILES[$file_form]['name'],$quality);
					}
					
					$info = "Изображение успешно загружено";
				} else  
					$error = 'Не удалось загрузить файл - '.$destination.' ';  
		}   
		else  
			$error = 'У файла недопустимое расширение';  
	}   
	else  
	{  
		// массив ошибок  
		$error_values = array( 
			UPLOAD_ERR_INI_SIZE   => 'Размер файла больше разрешенного директивой upload_max_filesize в php.ini',
			UPLOAD_ERR_FORM_SIZE  => 'Размер файла превышает указанное значение в MAX_FILE_SIZE', 
			UPLOAD_ERR_PARTIAL    => 'Файл был загружен только частично',   
			UPLOAD_ERR_NO_FILE    => 'Не был выбран файл для загрузки',   
			UPLOAD_ERR_NO_TMP_DIR => 'Не найдена папка для временных файлов',   
			UPLOAD_ERR_CANT_WRITE => 'Ошибка записи файла на диск' 
		);  
  
		$error_code = $_FILES[$file_form]['error'];  
  
		if (!empty($error_values[$error_code]))  
			$error = $error_values[$error_code];  
		else  
			$error = 'Случилось что-то непонятное';  
	}  
  
	if ($info != NULL)
		return $info;
	else
		return $error;
}  
  
function translit($str) {
	$tr = array(
		"А"=>"A","Б"=>"B","В"=>"V","Г"=>"G",
		"Д"=>"D","Е"=>"E","Ж"=>"J","З"=>"Z","И"=>"I",
		"Й"=>"Y","К"=>"K","Л"=>"L","М"=>"M","Н"=>"N",
		"О"=>"O","П"=>"P","Р"=>"R","С"=>"S","Т"=>"T",
		"У"=>"U","Ф"=>"F","Х"=>"H","Ц"=>"TS","Ч"=>"CH",
		"Ш"=>"SH","Щ"=>"SCH","Ъ"=>"","Ы"=>"YI","Ь"=>"",
		"Э"=>"E","Ю"=>"YU","Я"=>"YA","а"=>"a","б"=>"b",
		"в"=>"v","г"=>"g","д"=>"d","е"=>"e","ж"=>"j",
		"з"=>"z","и"=>"i","й"=>"y","к"=>"k","л"=>"l",
		"м"=>"m","н"=>"n","о"=>"o","п"=>"p","р"=>"r",
		"с"=>"s","т"=>"t","у"=>"u","ф"=>"f","х"=>"h",
		"ц"=>"ts","ч"=>"ch","ш"=>"sh","щ"=>"sch","ъ"=>"y",
		"ы"=>"yi","ь"=>"'","э"=>"e","ю"=>"yu","я"=>"ya",
		" "=>"_","?"=>"_","/"=>"_","\\"=>"_",
		"*"=>"_",":"=>"_","*"=>"_","\""=>"_","<"=>"_",
		">"=>"_","|"=>"_","%"=>"_"
	);
	return strtr($str,$tr);
}

// Изменение прозрачности для PNG
function setTransparency($new_image, $image_source) {
	$transparencyIndex = imagecolortransparent($image_source);
	$transparencyColor = array('red' => 255, 'green' => 255, 'blue' => 255);
   
	if ($transparencyIndex >= 0)
		$transparencyColor = imagecolorsforindex($image_source, $transparencyIndex);   
   
	$transparencyIndex = imagecolorallocate($new_image, $transparencyColor['red'], $transparencyColor['green'], $transparencyColor['blue']);
	imagefill($new_image, 0, 0, $transparencyIndex);
	imagecolortransparent($new_image, $transparencyIndex);
}

$extensions = array('jpg', 'jpeg', 'png', 'gif', 'JPG', 'JPEG', 'PNG', 'GIF');  
$uploaddir = '/home/site.ru/www/upload/'; 
echo uploadHandle($file_form, 1024, $extensions, $uploaddir, 1024);