README

Installation:

composer require andersonls/zpl

How to use

Below are concise examples showing common (simple) and more advanced usages of the library.

Simple usage (create a label with one cell and print it):

<?php
require __DIR__ . '/vendor/autoload.php';

// Use millimeters for coordinates and dimensions
use Zpl\Enums\Unit;
use Zpl\Enums\Align;
$driver = new \Zpl\ZplBuilder(Unit::MM);

// Set encoding (optional)
$driver->setEncoding(28);

$driver->setFont('0', 16);
$driver->setXY(0, 0);
$driver->drawCell(100, 10, 'Hello World', true, true, Align::CENTER);

$zpl = $driver->toZpl();

\Zpl\Printer::printer('192.168.1.1')->send($zpl);

Advanced usage (multiple elements, barcodes, QR codes, graphics, pages and raw commands):

<?php
require __DIR__ . '/vendor/autoload.php';

use Zpl\Enums\Unit;
$driver = new \Zpl\ZplBuilder(Unit::MM);
$driver->setFontMapper(new \Zpl\Fonts\Generic());
$driver->setDpi(300); // change printer DPI when needed

// Draw shapes
$driver->drawRect(5, 5, 50, 30);
$driver->drawCircle(60, 5, 25);

// Text with explicit coordinates
use Zpl\Enums\Orientation;
$driver->drawText(5, 40, 'Product: ABC-123', Orientation::NORMAL);

// Code 128 barcode (x, y, height, data, print human-readable?)
$driver->drawCode128(5, 50, 20, 'ABC123456789', true);

// QR Code (x, y, data, module size)
$driver->drawQrCode(50, 50, 'https://example.com/product/ABC-123', 6);

// Add an image/graphic. width is optional and will scale the graphic field in dots
$driver->drawGraphic(120, 10, __DIR__ . '/logo.png', 200);

// Add custom/pre/post raw commands (you can use ^XA, ^XZ and any other ZPL commands)
$driver->addPreCommand('^LH0,0'); // set label home
$driver->addPostCommand('^PQ1');  // print quantity 1

// New page (adds a new label) - useful if you want to print multiple labels in one ZPL payload
$driver->newPage();
$driver->drawText(5, 5, 'Second label');

// You can call arbitrary ZPL commands using method-like calls (dynamic): CF is same as ^CF
$driver->CF('A', 30); // ^CFA,30  (be careful with arguments and expected format)

\Zpl\Printer::printer('192.168.1.100')->send($driver->toZpl());

Macros

You can extend the ZplBuilder with custom macros to add reusable commands or behaviors. Macros are registered using the macro() method and can be called as if they were native methods.

Registering a Macro

$builder = new \Zpl\ZplBuilder('mm');
\Zpl\ZplBuilder::macro('drawCustomBox', function($x, $y, $w, $h) {
    $this->drawRect($x, $y, $w, $h);
    $this->drawText($x + 2, $y + 2, 'Custom');
});

Using a Macro

$builder->drawCustomBox(10, 10, 50, 20);

Notes

• Macros have access to the builder instance via $this.
• You can override existing methods, but use caution to avoid breaking core functionality.
• Macros are useful for encapsulating label patterns, custom shapes, or repetitive tasks.

Notes and tips

• Units: the constructor accepts a Unit enum (for example: Unit::MM or Unit::DOTS). When using Unit::MM, coordinates are converted to printer dots using the configured DPI (default 203).
• DPI: default resolution is 203 DPI. Use setDpi() to change it or getDpi() to read it.
• Font mapping: use setFontMapper() to provide a mapper implementing \Zpl\Fonts\AbstractMapper (the included \Zpl\Fonts\Generic maps logical font ids to ZPL fonts).
• Special characters: common control characters are converted to their ZPL-safe hex sequences automatically (see library mappings for details).
• Debugging: write the ZPL to a file and inspect it or send it to a printer emulator before printing on physical media.

Donations

If this project helps you somehow, you can give me a cup of coffee :)