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();
/* you could check HTTP_IF_MODIFIED_SINCE here and compare with
* $entries[$index]->getFileTime(). You could also send a
* "Last modified" header */
$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";
}
/*
* We have 3 options:
* - For FF and Opera, which support RFC 2231, use that format.
* - For IE and Chrome, use attwithfnrawpctenclong
* (http://greenbytes.de/tech/tc2231/#attwithfnrawpctenclong)
* - For the others, convert to ISO-8859-1, if possible
*/
$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.
English translation
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Document created the 30/01/2003, last modified the 26/10/2018
Source of the printed document:https://www.gaudry.be/en/php-rf-rar.examples.html
The infobrol is a personal site whose content is my sole responsibility. The text is available under CreativeCommons license (BY-NC-SA). More info on the terms of use and the author.
References
These references and links indicate documents consulted during the writing of this page, or which may provide additional information, but the authors of these sources can not be held responsible for the content of this page.
The author This site is solely responsible for the way in which the various concepts, and the freedoms that are taken with the reference works, are presented here. Remember that you must cross multiple source information to reduce the risk of errors.
