Название: Обработчик скачивания файлов по id

Описание: Код под основу скачки файлов по id с базы данных с ограничение скорости скачивания + треб. доработка

<?php
$fileX = array('777' => 'fonS.mp3',
'666' => 'dog.gif');

try
{
if (isset($_GET['id']) && !empty($_GET['id'])) {
	$id = $_GET['id']; //нужно создать фильтр для проверки id на число
	if ($id > 0) {
		$Dfile = (array_key_exists($id, $fileX) ? 1 : 0);
		switch ($Dfile) {
			case 1:
				downloadFile($fileX[$id]);
				break;
			case 0:
				throw new Exception("Данный файл не существует либо был удалён!");
				break;
			default:
				throw new Exception("Что-то пошло не так");
				break;
		}
	}
}
else throw new Exception("Файл для скачивания не указан!");
} catch (Exception $e) {
  	echo '<center>' . $e->getMessage() . '</center>';
}


function downloadFile ($fileLocation, $maxSpeed = 100000, $doStream = 0) {

		if (connection_status () != 0) {
			return (FALSE);
		}

		ini_set("zlib.output_compression", "Off");
		$fileName = basename ($fileLocation);

		$contentType = 'application/octet-stream';
		$expFile = explode ('.', $fileName);
		$endF = end ($expFile);
		$extension = strtolower ($endF);

		/* List of File Types */
		$fileTypes['swf'] = 'application/x-shockwave-flash';
		$fileTypes['pdf'] = 'application/pdf';
		$fileTypes['exe'] = 'application/octet-stream';
		$fileTypes['zip'] = 'application/zip';
		$fileTypes['doc'] = 'application/msword';
		$fileTypes['xls'] = 'application/vnd.ms-excel';
		$fileTypes['ppt'] = 'application/vnd.ms-powerpoint';
		$fileTypes['gif'] = 'image/gif';
		$fileTypes['png'] = 'image/png';
		$fileTypes['jpeg'] = 'image/jpg';
		$fileTypes['jpg'] = 'image/jpg';
		$fileTypes['rar'] = 'application/x-rar-compressed';
		$fileTypes['epub'] = 'application/epub+zip';

		$fileTypes['ra'] = 'audio/x-pn-realaudio';
		$fileTypes['ram'] = 'audio/x-pn-realaudio';
		$fileTypes['ogg'] = 'audio/x-pn-realaudio';

		$fileTypes['wav'] = 'audio/wav';
		$fileTypes['wmv'] = 'video/x-msvideo';
		$fileTypes['avi'] = 'video/x-msvideo';
		$fileTypes['asf'] = 'video/x-msvideo';
		$fileTypes['divx'] = 'video/x-msvideo';

		$fileTypes['mid'] = 'audio/midi';
		$fileTypes['midi'] = 'audio/midi';
		$fileTypes['mp3'] = 'audio/mpeg';
		$fileTypes['mp4'] = 'audio/mpeg';
		$fileTypes['mpeg'] = 'video/mpeg';
		$fileTypes['mpg'] = 'video/mpeg';
		$fileTypes['mpe'] = 'video/mpeg';
		$fileTypes['mov'] = 'video/quicktime';
		$fileTypes['swf'] = 'video/quicktime';
		$fileTypes['3gp'] = 'video/quicktime';
		$fileTypes['m4a'] = 'video/quicktime';
		$fileTypes['aac'] = 'video/quicktime';
		$fileTypes['m3u'] = 'video/quicktime';

		if(!empty($fileTypes[$extension])){
			$contentType = $fileTypes[$extension];
		}

		//lets clean the buffer first
		ob_end_clean();
		ob_start();

		header ("Cache-Control: public");
		header ("Content-Transfer-Encoding: binaryn");
		header ('Content-Type: ' . $contentType);

		$contentDisposition = 'attachment';

		if ($doStream == 1) {
			/* extensions to stream */
			$array_listen = array('mp3', 'm3u', 'm4a', 'mid', 'ogg', 'ra', 'ram', 'wm',
			'wav', 'wma', 'aac', '3gp', 'avi', 'mov', 'mp4', 'mpeg', 'mpg', 'swf', 'wmv', 'divx', 'asf');
			if (in_array ($extension, $array_listen)) {
				$contentDisposition = 'inline';
			}
		}

		$agent = strtolower ($_SERVER['HTTP_USER_AGENT']);

		if (strpos ($agent, 'msie') !== FALSE) {
			$fileName = preg_replace ('/./', '%2e', $fileName, substr_count ($fileName, '.') - 1);
		}

		header ("Content-Disposition: $contentDisposition; filename="$fileName"");

		header ("Accept-Ranges: bytes");
		$range = 0;
		$size = filesize ($fileLocation);

		if (isset($_SERVER['HTTP_RANGE'])) {
			list($a, $range) = explode ("=", $_SERVER['HTTP_RANGE']);
			str_replace ($range, "-", $range);
			$size2 = $size - 1;
			$new_length = $size - $range;
			header ("HTTP/1.1 206 Partial Content");
			header ("Content-Length: $new_length");
			header ("Content-Range: bytes $range$size2/$size");
		}
		else {
			$size2 = $size - 1;
			header ("Content-Range: bytes 0-$size2/$size");
			header ("Content-Length: " . $size);
		}

		if ($size == 0) {
			die('Zero byte file! Aborting download');
		}
		//	set_magic_quotes_runtime(0);
		$fp = fopen ("$fileLocation", "rb");

		fseek ($fp, $range);
		$connection = connection_status ();



		while (!feof ($fp) and (connection_status () == 0)) {
			set_time_limit (0);
			print(fread ($fp, 1024 * $maxSpeed));
			flush ();
			ob_flush ();
			sleep (1);
		}
		fclose ($fp);

		return ;

	}
?>

Добавил: Mr[G]Pro
Дата: 26 дек 2020, в 19:30 Комментарии (1)