(PHP Extension) Compress and Decompress a String

Demonstrates how to compress and decompress a string.

Chilkat PHP Downloads PHP Extension for Windows, Linux, MacOS, Alpine Linux, Solaris

<?php

// The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number.
// For example, if using Chilkat v9.5.0.48, then include as shown here:
include("chilkat_9_5_0.php");

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

$sb = new CkStringBuilder();

for ($i = 1; $i <= 20; $i++) {
    $sb->Append('This is the original uncompressed string.\r\n');
}

$compress = new CkCompression();
$compress->put_Algorithm('deflate');
// Indicate that the utf-8 byte representation of the string should be compressed.
$compress->put_Charset('utf-8');

$compressedBytes = new CkByteData();
$success = $compress->CompressString($sb->getAsString(),$compressedBytes);

// If the compressed data is desired in string format, then get the base64 representation of the bytes.
$compress->put_EncodingMode('base64');
$compressedBase64 = $compress->compressStringENC($sb->getAsString());
print 'Compressed Bytes as Base64: ' . $compressedBase64 . "\n";

// Now decompress...
$decompressedString = $compress->decompressString($compressedBytes);
print 'The original string after decompressing from binary compressed data:' . "\n";
print $decompressedString . "\n";

// To decompress from Base64...
$compress->put_EncodingMode('base64');
$decompressedString = $compress->decompressStringENC($compressedBase64);
print 'The original string after decompressing from Base64:' . "\n";
print $decompressedString . "\n";

?>