Perl Requires Chilkat v11.7.0+

QR Code Numeric, Alphanumeric and Byte Modes

See more QR Code Examples

Demonstrates the QR encoding modes. Digits alone are stored in numeric mode, and text made only of digits, upper-case letters, space and $ % * + - . / : in alphanumeric mode. Both pack more characters into a symbol than byte mode, which is used for everything else. QrCode chooses the most compact mode the text allows, and the response reports it. A product code written in upper case therefore gives a smaller symbol than the same code in lower case. Perl

use chilkat();

$success = 0;

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

$fmt = chilkat::CkFormats->new();
$json = chilkat::CkJsonObject->new();
$jsonOut = chilkat::CkJsonObject->new();

#  Digits only.
$json->UpdateString("payload.text","00123456789012345678");
$success = $fmt->QrCode("generate",$json,$jsonOut);
if ($success == 0) {
    print $fmt->lastErrorText() . "\r\n";
    exit;
}

print "digits: mode " . $jsonOut->stringOf("symbols[0].selectedEncoding.mode") . ", version " . $jsonOut->IntOf("symbols[0].selectedEncoding.version") . "\r\n";

#  Upper-case letters, digits, space and - are all in the alphanumeric set.
$json->UpdateString("payload.text","ORDER-12345 LOT A7 SHELF 12-C");
$success = $fmt->QrCode("generate",$json,$jsonOut);
if ($success == 0) {
    print $fmt->lastErrorText() . "\r\n";
    exit;
}

print "upper case: mode " . $jsonOut->stringOf("symbols[0].selectedEncoding.mode") . ", version " . $jsonOut->IntOf("symbols[0].selectedEncoding.version") . "\r\n";

#  Lower-case letters are not, so the same text in lower case needs byte mode.
$json->UpdateString("payload.text","order-12345 lot a7 shelf 12-c");
$success = $fmt->QrCode("generate",$json,$jsonOut);
if ($success == 0) {
    print $fmt->lastErrorText() . "\r\n";
    exit;
}

print "lower case: mode " . $jsonOut->stringOf("symbols[0].selectedEncoding.mode") . ", version " . $jsonOut->IntOf("symbols[0].selectedEncoding.version") . "\r\n";

#  The mode can be named.  Byte mode can hold any text.  Naming a mode the text cannot use
#  (numeric for text with letters, for example) fails with conflictingOptions.
$json->UpdateString("payload.text","00123456789012345678");
$json->UpdateString("encoding.qr.mode","byte");
$success = $fmt->QrCode("generate",$json,$jsonOut);
if ($success == 0) {
    print $fmt->lastErrorText() . "\r\n";
    exit;
}

print "digits as bytes: mode " . $jsonOut->stringOf("symbols[0].selectedEncoding.mode") . ", version " . $jsonOut->IntOf("symbols[0].selectedEncoding.version") . "\r\n";

#  The four symbols, in the order they were made:

#  

#  Sample output:

#  digits: mode numeric, version 1
#  upper case: mode alphanumeric, version 2
#  lower case: mode byte, version 3
#  digits as bytes: mode byte, version 2