(PHP ActiveX) Encode Integer to Hex or Base64 using N Bytes

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.

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

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Crypt2')
$crypt = new COM("Chilkat.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 = 1;
$s = $crypt->encodeInt($value,8,$bLittleEndian,'hex');
// The output is: 5634120000000000
print $s . "\n";

// Now use big-endian...
$bLittleEndian = 0;
$s = $crypt->encodeInt($value,8,$bLittleEndian,'hex');
// The output is: 0000000000123456
print $s . "\n";

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

?>