Phar::decompress()

(PHP 5 >= 5.3.0, PHP 7, PECL phar >= 2.0.0)

Decompresses the entire Phar archive

说明

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 decompresses the entire archive.

For Zip-based phar archives, this method fails with an exception. The zlib extension must be enabled to decompress an archive compressed with gzip compression, and the bzip2 extension must be enabled in order to decompress an archive compressed 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 changes the file extension of the archive,.pharby default for phar archives, or.phar.tarfor tar-based phar archives. Alternatively, a file extension may be specified with the second parameter.

参数

For decompressing, the default file extensions are.pharand.phar.tar. Use this parameter to specify another file extension. Be aware that all executable phar archives must contain.pharin their filename.

返回值

A Phar object is returned.

错误／异常

Throws BadMethodCallException if the phar.readonly INI variable is on, the zlib extension is not available, or the bzip2 extension is not enabled.

范例

A Phar::decompress() example

参见

• PharFileInfo::getCompressedSize() Returns the actual size of the file(with compression)inside the Phar archive
• PharFileInfo::isCompressed() Returns whether the entry is compressed
• PharFileInfo::compress() Compresses the current Phar entry with either zlib or bzip2 compression
• PharFileInfo::decompress() Decompresses the current Phar entry within the phar
• PharData::compress() Compresses the entire tar/zip archive using Gzip or Bzip2 compression
• Phar::canCompress() Returns whether phar extension supports compression using either zlib or bzip2
• Phar::isCompressed() Returns Phar::GZ or PHAR::BZ2 if the entire phar archive is compressed(.tar.gz/tar.bz and so on)
• Phar::compress() Compresses the entire Phar archive using Gzip or Bzip2 compression
• Phar::getSupportedCompression() Return array of supported compression algorithms
• Phar::compressFiles() Compresses all files in the current Phar archive
• Phar::decompressFiles() Decompresses all files in the current Phar archive

decompress() will truncate any part of the filename after the first period, as it assumes it's part of the extension. For example, if your PharData archive is named "views-3.x-3.13.tar.gz", calling decompress on it will create a tar file named "views-3.tar". See https://bugs.php.net/bug.php?id=58852

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