A library for dynamically streaming dynamic tar or zip files without the need to have the complete file stored on the server. You can specify if you want a tar or a zip; or if you want to have the library figure out the best option based on the user agent string.
/**
* Construct Parameters:
*
* $name - Name of output file (optional).
* $opt - Hash of archive options (optional, see "Archive Options"
* below).
* $output_stream - Output stream for archive (optional - defaults to php://output)
*
* Archive Options:
*
* comment - Comment for this archive. (zip only)
* content_type - HTTP Content-Type. Defaults to 'application/x-zip'.
* content_disposition - HTTP Content-Disposition. Defaults to
* 'attachment; filename=\"FILENAME\"', where
* FILENAME is the specified filename.
* large_file_size - Size, in bytes, of the largest file to try
* and load into memory (used by
* add_file_from_path()). Large files may also
* be compressed differently; see the
* 'large_file_method' option.
* send_http_headers - Boolean indicating whether or not to send
* the HTTP headers for this file.
* large_files_only - Boolean indicating whether or not to assume
* that all files we are sending are large.
*
* File Options:
* time - Last-modified timestamp (seconds since the epoch) of
* this file. Defaults to the current time.
* comment - Comment related to this file. (zip only)
* type - Type of file object. (tar only)
*
*
* Note that content_type and content_disposition do nothing if you are
* not sending HTTP headers.
*
* Large File Support:
*
* By default, the method add_file_from_path() will send send files
* larger than 20 megabytes along raw rather than attempting to
* compress them. You can change both the maximum size and the
* compression behavior using the large_file_* options above, with the
* following caveats:
*
* * For "small" files (e.g. files smaller than large_file_size), the
* memory use can be up to twice that of the actual file. In other
* words, adding a 10 megabyte file to the archive could potentially
* occupty 20 megabytes of memory.
*
* * For "large" files we use the store method, meaning that the file is
* not compressed at all, this is because there is not currenly a good way
* to compress a stream within PHP
*
* Notes:
*
* If you do not set a filename, then this library _DOES NOT_ send HTTP
* headers by default. This behavior is to allow software to send its
* own headers (including the filename), and still use this library.
*/A fast and simple streaming archive files for PHP. Here's a simple example:
// Create a new archive stream object (tar or zip depending on user agent)
$zip = \Barracuda\ArchiveStream\Archive::instance_by_useragent('example');
// Create a file named 'hello.txt'
$zip->add_file('hello.txt', 'This is the contents of hello.txt');
// Add a file named 'image.jpg' from a local file 'path/to/image.jpg'
$zip->add_file_from_path('image.jpg', 'path/to/image.jpg');
// Finish the zip stream
$zip->finish();This method can be used to serve files of any size (GB, TB).
// Create a new archive stream object (tar or zip depending on user agent)
$zip = \Barracuda\ArchiveStream\Archive::instance_by_useragent('example');
// Initiate the stream transfer of some_image.jpg with size 324134
$zip->init_file_stream_transfer('some_image.jpg', 324134);
// Stream part of the contents of some_image.jpg
// This method should be called as many times as needed to send all of its data
$zip->stream_file_part($data);
// Send data descriptor header for file
$zip->complete_file_stream();
// Other files can be added here, simply run the three commands above for each file that is being sent
// Explicitly add a directory to the zip (doesn't recurse - useful for empty
// directories)
$zip->add_directory('foo');
$zip->add_directory('foo/bar');
// Finish the zip stream
$zip->finish();Simply run composer require barracudanetworks/archivestream-php inside your project.
- PHP >=5.1.2 (or the Hash extension).
- gmp extension
- Only the Zip64 (version 4.5 of the Zip specification) format is supported.
- Files cannot be resumed if a download fails before finishing.
You can also add comments, modify file timestamps, and customize (or disable) the HTTP headers. See the class file for details.
- Paul Duncan - Original author
- Daniel Bergey
- Andy Blyler
- Tony Blyler
- Andrew Borek
- Rafael Corral
- John Maguire
- Zachery Stuart
Original work Copyright 2007-2009 Paul Duncan pabs@pablotron.org Modified work Copyright 2013-2015 Barracuda Networks, Inc.
Licensed under the MIT License