Examples

    See also the examples under rar:// wrapper.

    Example #1 On-the-fly decompression

    <?php

    if (!array_key_exists("i", $_GET) || !is_numeric($_GET["i"]))
    die(    "Index unspecified or non-numeric");
    $index = (int) $_GET["i"];

    $arch = RarArchive::open("example.rar");
    if (    $arch === FALSE)
    die(    "Cannot open example.rar");

    $entries = $arch->getEntries();
    if (    $entries === FALSE)
    die(    "Cannot retrieve entries");

    if (!    array_key_exists($index, $entries))
    die(    "No such index: $index");

    $orfilename = $entries[$index]->getName(); //UTF-8 encoded

    $filesize = $entries[$index]->getUnpackedSize();



    $fp = $entries[$index]->getStream();
    if (    $fp === FALSE)
    die(    "Cannot open file with index $index insided the archive.");

    $arch->close(); //no longer needed; stream is independent

    function detectUserAgent() {
    if (!    array_key_exists('HTTP_USER_AGENT', $_SERVER))
    return     "Other";

    $uas = $_SERVER['HTTP_USER_AGENT'];
    if (    preg_match("@Opera/@", $uas))
    return     "Opera";
    if (    preg_match("@Firefox/@", $uas))
    return     "Firefox";
    if (    preg_match("@Chrome/@", $uas))
    return     "Chrome";
    if (    preg_match("@MSIE ([0-9.]+);@", $uas, $matches)) {
    if (((float)    $matches[1]) >= 7.0)
    return     "IE";
    }

    return     "Other";
    }


    $formatRFC2231 = 'Content-Disposition: attachment; filename*=UTF-8\'\'%s';
    $formatDef = 'Content-Disposition: attachment; filename="%s"';

    switch (    detectUserAgent()) {
    case     "Opera":
    case     "Firefox":
    $orfilename = rawurlencode($orfilename);
    $format = $formatRFC2231;
    break;

    case     "IE":
    case     "Chrome":
    $orfilename = rawurlencode($orfilename);
    $format = $formatDef;
    break;
    default:
    if (    function_exists('iconv'))
    $orfilename =
    @    iconv("UTF-8", "ISO-8859-1//TRANSLIT", $orfilename);
    $format = $formatDef;
    }

    header(sprintf($format, $orfilename));
    //cannot send error messages from now on (headers already sent)

    //replace by real content type, perhaps infering from the file extension
    $contentType = "application/octet-stream";
    header("Content-Type: $contentType");

    header("Content-Transfer-Encoding: binary");

    header("Content-Length: $filesize");

    if (    $_SERVER['REQUEST_METHOD'] == "HEAD")
    die();

    while (!    feof($fp)) {
    $s = @fread($fp, 8192);
    if (    $s === false)
    break;     //useless to send error messages

    echo $s;
    }
    ?>

    This example opens a RAR file and presents the requested file inside the RAR archive for download to the client.

    Example #2 RAR extension filesystem extraction example

    <?php

    $rar_file     = rar_open('example.rar') or die("Can't open Rar archive");

    $entries = rar_list($rar_file);

    foreach (    $entries as $entry) {
    echo     'Filename: ' . $entry->getName() . "\n";
    echo     'Packed size: ' . $entry->getPackedSize() . "\n";
    echo     'Unpacked size: ' . $entry->getUnpackedSize() . "\n";

    $entry->extract('/dir/extract/to/');
    }

    rar_close($rar_file);

    ?>

    This example opens a RAR file archive and extracts each entry to the specified directory.

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