RarArchive::open
rar_open
(PECL rar >= 2.0.0)
RarArchive::open -- rar_open — Open RAR archive
Description
Object oriented style (method):
$filename
[, string $password = NULL
[, callable $volume_callback = NULL
]] )Procedural style:
$filename
[, string $password = NULL
[, callable $volume_callback = NULL
]] )Open specified RAR archive and return RarArchive instance representing it.
Note:
If opening a multi-volume archive, the path of the first volume should be passed as the first parameter. Otherwise, not all files will be shown. This is by design.
Parameters
-
filename -
Path to the Rar archive.
-
password -
A plain password, if needed to decrypt the headers. It will also be used by default if encrypted files are found. Note that the files may have different passwords in respect to the headers and among them.
-
volume_callback -
A function that receives one parameter – the path of the volume that was not found – and returns a string with the correct path for such volume or
NULLif such volume does not exist or is not known. The programmer should ensure the passed function doesn't cause loops as this function is called repeatedly if the path returned in a previous call did not correspond to the needed volume. Specifying this parameter omits the notice that would otherwise be emitted whenever a volume is not found; an implementation that only returnsNULLcan therefore be used to merely omit such notices.
Prior to version 2.0.0, this function would not handle relative paths correctly. Use realpath() as a workaround.
Return Values
Returns the requested RarArchive instance or FALSE on failure.
Changelog
| Version | Description |
|---|---|
| 3.0.0 |
volume_callback was added.
|
Examples
Example #1 Object oriented style
<?php
$rar_arch = RarArchive::open('encrypted_headers.rar', 'samplepassword');
if ($rar_arch === FALSE)
die("Failed opening file");
$entries = $rar_arch->getEntries();
if ($entries === FALSE)
die("Failed fetching entries");
echo "Found " . count($entries) . " files.\n";
if (empty($entries))
die("No valid entries found.");
$stream = reset($entries)->getStream();
if ($stream === FALSE)
die("Failed opening first file");
$rar_arch->close();
echo "Content of first one follows:\n";
echo stream_get_contents($stream);
fclose($stream);
?>
The above example will output something similar to:
Found 2 files. Content of first one follows: Encrypted file 1 contents.
Example #2 Procedural style
<?php
$rar_arch = rar_open('encrypted_headers.rar', 'samplepassword');
if ($rar_arch === FALSE)
die("Failed opening file");
$entries = rar_list($rar_arch);
if ($entries === FALSE)
die("Failed fetching entries");
echo "Found " . count($entries) . " files.\n";
if (empty($entries))
die("No valid entries found.");
$stream = reset($entries)->getStream();
if ($stream === FALSE)
die("Failed opening first file");
rar_close($rar_arch);
echo "Content of first one follows:\n";
echo stream_get_contents($stream);
fclose($stream);
?>
Example #3 Volume Callback
<?php
/* In this example, there's a volume named multi_broken.part1.rar
* whose next volume is named multi.part2.rar */
function resolve($vol) {
if (preg_match('/_broken/', $vol))
return str_replace('_broken', '', $vol);
else
return null;
}
$rar_file1 = rar_open(dirname(__FILE__).'/multi_broken.part1.rar', null, 'resolve');
$entry = $rar_file1->getEntry('file2.txt');
$entry->extract(null, dirname(__FILE__) . "/temp_file2.txt");
?>
- PHP Руководство
- Функции по категориям
- Индекс функций
- Справочник функций
- Расширения для сжатия и архивации
- Архивирование Rar
- Функция RarArchive::close() - Закрывает RAR архив и освобождает все ресурсы
- Функция RarArchive::getComment() - Get comment text from the RAR archive
- Функция RarArchive::getEntries() - Возвращает полный список элемнтов из RAR архива
- Функция RarArchive::getEntry() - Возвращает объект элемента из RAR архива
- Функция RarArchive::isBroken() - Test whether an archive is broken (incomplete)
- Функция RarArchive::isSolid() - Check whether the RAR archive is solid
- Функция RarArchive::open() - Открывает RAR архив
- Функция RarArchive::setAllowBroken() - Whether opening broken archives is allowed
- Функция RarArchive::__toString() - Get text representation
Коментарии
I'm just confused why Rar::open() would be static, there should be a constructor instead.
I think $rar = new RarArchive(...); is much better than $rar = RarArchive::open(...); that is the real OOP style.