Phar::compress
(PHP 5 >= 5.3.0, PHP 7, PECL phar >= 2.0.0)
Phar::compress — Compresses the entire Phar archive using Gzip or Bzip2 compression
说明
public Phar::compress
( int $compression
[, string $extension
] ) : object
Note:
此方法需要
将 php.ini 中的 phar.readonly 设为
0 以适合 Phar
对象. 否则, 将抛出PharException.
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.
参数
-
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.
返回值
Returns a Phar object.
范例
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
?>