Aztec Code

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20 Sep 2026 - Nicola Asuni

Aztec puts its finder in the middle, a bullseye of concentric squares, and grows outward in layers. There is no quiet zone requirement, which is why transport operators print it on tickets and boarding passes where every millimetre is spoken for.

Error correction is a percentage, not a level. The library defaults to 33 per cent of the symbol and accepts anything from 1 to 100; the standard sets the floor at 23 per cent plus three codewords.

Type Token

Item	Value
Type token	`AZTEC`
Enum case	`BarcodeType::AZTEC`
Family	2D
Standard	ISO/IEC 24778
Class	`\Com\Tecnick\Barcode\Type\Square\Aztec`

Input

Item	Value
Character set	any byte sequence
Length	up to 3832 digits or 3067 letters in a full range symbol
Check	Reed-Solomon error correction at the chosen percentage
Extra parameters	4 (see below)

Extra Parameters

Appended to the type token after commas, as in AZTEC,50,A,A.

Position	Meaning	Values	Default
1	error correction percentage	1 to 100	33
2	encoding hint	`A` automatic, `B` binary	`A`
3	symbol range	`A` automatic, `F` full range	`A`
4	ECI code	an ECI identifier for the character set	unset

Examples

Mixed letters and digits

<?php

require_once __DIR__ . '/vendor/autoload.php';

$barcode = new \Com\Tecnick\Barcode\Barcode();
$bobj = $barcode->getBarcodeObj(
    type: 'AZTEC',
    code: 'ABCDabcd01234',
    width: -4,
    height: -4,
    color: 'black',
    padding: [0, 0, 0, 0],
)->setBackgroundColor('white');

echo $bobj->getInlineSvgCode();

Aztec Code barcode encoding ABCDabcd01234

Half the symbol given over to error correction

$bobj = $barcode->getBarcodeObj(
    type: 'AZTEC,50,A,A',
    code: 'ABCDabcd01234',
    width: -4,
    height: -4,
    color: 'black',
    padding: [0, 0, 0, 0],
)->setBackgroundColor('white');