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Phar::canCompress

(PHP >= 5.3.0, PECL phar >= 1.0.0)

Phar::canCompressReturns whether phar extension supports compression using either zlib or bzip2

说明

final public static bool Phar::canCompress ([ int $type = 0 ] )

This should be used to test whether compression is possible prior to loading a phar archive containing compressed files.

参数

type

Either Phar::GZ or Phar::BZ2 can be used to test whether compression is possible with a specific compression algorithm (zlib or bzip2).

返回值

TRUE if compression/decompression is available, FALSE if not.

范例

Example #1 A Phar::canCompress() example

<?php
if ( Phar :: canCompress ()) {
    echo 
file_get_contents ( 'phar://compressedphar.phar/internal/file.txt' );
} else {
    echo 
'no compression available' ;
}
?>

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
  • Phar::isCompressed() - Returns Phar::GZ or PHAR::BZ2 if the entire phar archive is compressed (.tar.gz/tar.bz and so on)
  • Phar::compressFiles() - Compresses all files in the current Phar archive
  • Phar::decompressFiles() - Decompresses all files in the current Phar archive
  • Phar::getSupportedCompression() - Return array of supported compression algorithms
  • Phar::convertToExecutable() - Convert a phar archive to another executable phar archive file format
  • Phar::convertToData() - Convert a phar archive to a non-executable tar or zip file
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