PharData::extractTo

(PHP >= 5.3.0, PECL phar >= 2.0.0)

PharData::extractTo — Extract the contents of a tar/zip archive to a directory

说明

bool PharData::extractTo ( string $pathto [, string|array $files [, bool $overwrite = false ]] )

Extract all files within a tar/zip archive to disk. Extracted files and directories preserve permissions as stored in the archive. The optional parameters allow optional control over which files are extracted, and whether existing files on disk can be overwritten. The second parameter files can be either the name of a file or directory to extract, or an array of names of files and directories to extract. By default, this method will not overwrite existing files, the third parameter can be set to true to enable overwriting of files. This method is similar to ZipArchive::extractTo().

参数

pathto

Path to extract the given files to

files

The name of a file or directory to extract, or an array of files/directories to extract

overwrite

Set to TRUE to enable overwriting existing files

返回值

returns TRUE on success, but it is better to check for thrown exception, and assume success if none is thrown.

错误／异常

Throws PharException if errors occur while flushing changes to disk.

范例

Example #1 A PharData::extractTo() example

<?php
try {
    $phar = new PharData('myphar.tar');
    $phar->extractTo('/full/path'); // extract all files
    $phar->extractTo('/another/path', 'file.txt'); // extract only file.txt
    $phar->extractTo('/this/path',
        array('file1.txt', 'file2.txt')); // extract 2 files only
    $phar->extractTo('/third/path', null, true); // extract all files, and overwrite
} catch (Exception $e) {
    // handle errors
}
?>

参见

User Contributed Notes

Anonymous 08-Jun-2017 09:34
I'm unable to extract the first directory from a tar archive:
the destination dir remains empty,
no error is thrown

<?php
$tar = new \PharData('archive.tar');
if ($tar->current()->isDir()) {
                echo 'is_dir';
                $dir = $tar->current()->getPathname();
                $dir = basename($dir);
                $tar->extractTo('destination', $dir);
}
?>

the docs hint that the second param could be a name of file OR DIR to be extracted from the archive, is that really possible?
njh at aelius dot com 08-Mar-2013 08:34
Note that PHAR only supports extracting the 'ustar' variant of the tar archives.

Some systems (such as older versions of Mac OS X) generate the 'pax' format by default.

See here for more information:
http://php.net/manual/pl/phar.fileformat.tar.php