Quoted-Printable Encode/Decode a String

PHP example to quoted-printable encode and decode a string.

Download Chilkat Crypt ActiveX

<?php

$crypt = new COM("Chilkat.Crypt2");

//  Any string argument automatically begins the 30-day trial.
$success = $crypt->UnlockComponent('30-day trial');
if ($success != true) {
    print $crypt->lastErrorText() . "\n";
    exit;
}

//  Here's a string in Icelandic using non us-ascii chars:
$s = 'Ég get etið gler án þess að meiða mig.';

$crypt->CryptAlgorithm = 'none';
$crypt->EncodingMode = 'quoted-printable';

//  Quoted-printable encode/decode the iso-8859-1
//  representation of the string.  Notice how each
//  Icelandic char is represented by 1 byte:
$crypt->Charset = 'iso-8859-1';
$qp = $crypt->encryptStringENC($s);
print 'iso-8859-1:' . "\n";
print $qp . "\n";
$decoded = $crypt->decryptStringENC($qp);
print $decoded . "\n";

//  Now do the same using utf-8. Notice how each
//  Icelandic char is represented by 2 bytes in utf-8:
$crypt->Charset = 'utf-8';
$qp = $crypt->encryptStringENC($s);
print 'utf-8:' . "\n";
print $qp . "\n";
$decoded = $crypt->decryptStringENC($qp);
print $decoded . "\n";
?>