PHP

Demonstrate Binary Data Encoding Methods

Demonstrates binary data encoding methods.

Note: This example requires Chilkat v9.5.0.64 or later.

Chilkat2 PHP

<?php

use Chilkat2\BinData;
use Chilkat2\StringBuilder;

$binData = new BinData();

// Append 10 bytes: 00, 01, 02, 03, 04, 05, 06, 07, 08, 09
$binData->AppendEncoded('00010203040506070809', 'hex');

// Show that binData contains 10 bytes.
echo 'num bytes = ', $binData->NumBytes, "\n";

// Get as base64
echo 'base64: ', $binData->GetEncoded('base64'), "\n";

// Get a chunk of the binary data.
// The 1st byte is at index 0.
// The output should be "02030405"
$offset = 2;
$numBytes = 4;
echo 'chunk: ', $binData->GetEncodedChunk($offset, $numBytes, 'hex'), "\n";

// Copy the bytes to a StringBuilder using the base64url encoding
$sb = new StringBuilder();
$binData->GetEncodedSb('base64url', $sb);
echo 'base64url: ', $sb->GetAsString(), "\n";

// Remove a chunk from the binary data
$offset = 2;
$numBytes = 4;
$binData->RemoveChunk($offset, $numBytes);
// The bytes remaining are 00,01,06,07,08,and 09
echo 'after removing chunk: ', $binData->GetEncoded('hex'), "\n";