bzip2 Extension

The bzip2 extension provides functions to handle the zip compression format: read, write and access arbitrary part of files. It also provide a compression format for the output of PHP.

<?php
// open file for reading
$bz = bzopen($filename, r);

// output until end of the file
echo bzread($bz);

bzclose($bz);
?>

Documentation

See also Compress Files with bzip2 in PHP.

Related : zlib extension, zip Extension