(PHP ActiveX) GZip Create / Extract .gz File

Demonstrates how to compress a file to create a .gz (GZip) file.

Note: The .gz file format is a compressed file format. It contains a single file. The .gz file format is not an archive format (i.e. it does not contain a collection of files/directories such as with the .zip, .rar, or .tar file formats). GZip is often combined with TAR to create a .tgz (or .tar.gz).

Note: It is possible for a .gz to contain more than one file, but this is very uncommon.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Gzip')
$gzip = new COM("Chilkat.Gzip");

// File-to-file GZip:
// Compress "hamlet.xml" to create "hamlet.xml.gz"
$success = $gzip->CompressFile('hamlet.xml','hamlet.xml.gz');
if ($success != 1) {
    print $gzip->LastErrorText . "\n";
    exit;
}

// File-to-file ungzip
// Decompress "hamlet.xml.gz" to create "hamletOut.xml"
$success = $gzip->UncompressFile('hamlet.xml.gz','hamletOut.xml');
if ($success != 1) {
    print $gzip->LastErrorText . "\n";
    exit;
}

// File-to-string ungzip
// Decompress the contents of a .gz directly to a string variable:
// The 2nd argument indicates the charset of the character
// data after it is decompressed.

$xmlStr = $gzip->uncompressFileToString('hamlet.xml.gz','utf-8');
if ($success != 1) {
    print $gzip->LastErrorText . "\n";
    exit;
}

print $xmlStr . "\n";

// The Chilkat GZip API provides much more flexibility than shown
// here.  See the reference documentation at 
// http://www.chilkatsoft.com/refdoc for more information

?>