Phar::compress
Compresses the entire Phar archive using Gzip or Bzip2 compression
Description
public Pharnull Phar::compress(int $compression
, stringnull $extension
= null
)
Note:
This
method requires the php.ini setting phar.readonly
to be
set to 0
in order to work for Phar
objects. Otherwise, a PharException will be thrown.
For tar-based and phar-based phar archives, this method compresses the entire archive using
gzip compression or bzip2 compression. The resulting file can be processed with the
gunzip command/bunzip command, or accessed directly and transparently with the Phar
extension.
For Zip-based phar archives, this method fails with an exception.
The zlib extension must be enabled to compress
with gzip compression, the bzip2 extension must be
enabled in order to compress with bzip2 compression.
As with all functionality that modifies the contents of a phar, the
phar.readonly INI variable must be off
in order to succeed.
In addition, this method automatically renames the archive, appending .gz
,
.bz2
or removing the extension if passed Phar::NONE
to
remove compression. Alternatively, a file extension may be specified with the second
parameter.
Parameters
-
compression
-
Compression must be one of Phar::GZ
,
Phar::BZ2
to add compression, or Phar::NONE
to remove compression.
-
extension
-
By default, the extension is .phar.gz
or .phar.bz2
for compressing phar archives, and
.phar.tar.gz
or .phar.tar.bz2
for
compressing tar archives. For decompressing, the default file extensions
are .phar
and .phar.tar
.
Return Values
Returns a Phar object, or null
on failure.
Errors/Exceptions
Throws BadMethodCallException if
the phar.readonly
INI variable is on, the zlib
extension is not available, or the bzip2 extension
is not enabled.
Examples
Example #1 A Phar::compress example
<?php
$p = new Phar('/path/to/my.phar', 0, 'my.phar');
$p['myfile.txt'] = 'hi';
$p['myfile2.txt'] = 'hi';
$p1 = $p->compress(Phar::GZ); // copies to /path/to/my.phar.gz
$p2 = $p->compress(Phar::BZ2); // copies to /path/to/my.phar.bz2
$p3 = $p2->compress(Phar::NONE); // exception: /path/to/my.phar already exists
?>
See Also
- PharFileInfo::getCompressedSize
- PharFileInfo::isCompressed
- PharFileInfo::compress
- PharFileInfo::decompress
- PharData::compress
- Phar::canCompress
- Phar::isCompressed
- Phar::decompress
- Phar::getSupportedCompression
- Phar::compressFiles
- Phar::decompressFiles