PHP ActiveX 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. PHP ActiveX

<?php

$success = 0;

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

$fmt = new COM("Chilkat.Formats");
$json = new COM("Chilkat.JsonObject");
$jsonOut = new COM("Chilkat.JsonObject");

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

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

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

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

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

?>