PHP

Encode Integer to Hex or Base64 using N Bytes

See more Encryption Examples

Demonstrates how to write an integer to N bytes (little-endian or big-endian) and return the bytes in any encoding such as hex, base64, etc.

Note: This example requires Chilkat v9.5.0.77 or greater.

Chilkat2 PHP

<?php

use Chilkat2\Crypt2;

$crypt = new Crypt2();

// 1193046 decimal is equal to 0x123456 hex.
$value = 1193046;

// Write the integer in 8 bytes using little-endian byte-order and return as hex
$bLittleEndian = true;
$s = $crypt->EncodeInt($value, 8, $bLittleEndian, 'hex');
// The output is: 5634120000000000
echo $s, "\n";

// Now use big-endian...
$bLittleEndian = false;
$s = $crypt->EncodeInt($value, 8, $bLittleEndian, 'hex');
// The output is: 0000000000123456
echo $s, "\n";

// Instead of hex, get the 8 bytes using base64.
$s = $crypt->EncodeInt($value, 8, $bLittleEndian, 'base64');
// The output is: AAAAAAASNFY=
echo $s, "\n";