This project implements a subset of Epson's ESC/POS protocol for thermal receipt printers. It allows you to generate and print receipts with basic formatting, cutting, and barcodes on a compatible printer.

The library was developed to add drop-in support for receipt printing to any PHP app, including web-based point-of-sale (POS) applications.

A "hello world" receipt can be generated easily (Call this hello-world.php):

<?php
require_once(dirname(__FILE__) . "/Escpos.php");
$printer = new Escpos();
$printer -> text("Hello World!\n");
$printer -> cut();
$printer -> close();

This would be printed as:

# Networked printer
php hello-world.php | nc 10.x.x.x. 9100
# Local printer
php hello-world.php > /dev/...
# Windows local printer
php hello-world.php > foo.txt
net use LPT1 \\server\printer
copy foo.txt LPT1
del foo.txt

From your web app, you could pass the output directly to a socket if your printer is networked:

<?php
require_once(dirname(__FILE__) . "/Escpos.php");
$connector = new NetworkPrintConnector("10.x.x.x", 9100);
$printer = new Escpos($connector);
$printer -> text("Hello World!\n");
$printer -> cut();
$printer -> close();

Or to a local printer:

<?php
require_once(dirname(__FILE__) . "/Escpos.php");
$connector = new FilePrintConnector("/dev/ttyS0");
$printer = new Escpos($connector);
$printer -> text("Hello World!\n");
$printer -> cut();
$printer -> close();

The library should be initialised with a PrintConnector, which will pass on the data to your printer. Use the table under "Compatibility", or the examples below to choose the appropriate connector for your platform & interface. If no connector is specified, then standard output is used.

When you have finished using the print object, call close() to finalize any data transfers.

On Linux, your printer device file will be somewhere like /dev/lp0 (parallel), /dev/usb/lp1 (USB), /dev/ttyUSB0 (USB-Serial), /dev/ttyS0 (serial).

On Windows, the device files will be along the lines of LPT1 (parallel) or COM1 (serial). Use the WindowsPrintConnector to tap into system printing on Windows (eg. Windows USB, SMB or Windows LPT) - this submits print jobs via a queue rather than communicating directly with the printer.

A complete real-world receipt can be found in the code of Auth in ReceiptPrinter.php. It includes justification, boldness, and a barcode.

Other examples are located in the example/ directory.

This driver is known to work with the following OS/interface combinations:

Many thermal receipt printers support ESC/POS to some degree. This driver has been known to work with:

• Epson TM-T88III
• Epson TM-T88IV
• Epson TM-T70
• Epson TM-T82II
• Epson TM-T20
• Epson TM-T70II
• EPOS TEP 220M
• Okipos 80 Plus III
• SEYPOS PRP-300
• Xprinter XP-Q800
• Zijang NT-58H
• Zijang ZJ-5870
• Zijang ZJ-5890T (Marketed as POS 5890T)

If you use any other printer with this code, please let me know so I can add it to the list.

Construct new print object.

Parameters:

• PrintConnector $connector: The PrintConnector to send data to. If not set, output is sent to standard output.
• AbstractCapabilityProfile $profile Supported features of this printer. If not set, the DefaultCapabilityProfile will be used, which is suitable for Epson printers.

See example/interface/ for ways to open connections for different platforms and interfaces.

Print a barcode.

Parameters:

• string $content: The information to encode.
• int $type: The barcode standard to output. If not specified, Escpos::BARCODE_CODE39 will be used.

Currently supported barcode standards are (depending on your printer):

• BARCODE_UPCA
• BARCODE_UPCE
• BARCODE_JAN13
• BARCODE_JAN8
• BARCODE_CODE39
• BARCODE_ITF
• BARCODE_CODABAR

Note that some barcode standards can only encode numbers, so attempting to print non-numeric codes with them may result in strange behaviour.

See graphics() below.

Cut the paper.

Parameters:

• int $mode: Cut mode, either Escpos::CUT_FULL or Escpos::CUT_PARTIAL. If not specified, Escpos::CUT_FULL will be used.
• int $lines: Number of lines to feed before cutting. If not specified, 3 will be used.

Print and feed line / Print and feed n lines.

Parameters:

• int $lines: Number of lines to feed

Print and reverse feed n lines.

Parameters:

• int $lines: number of lines to feed. If not specified, 1 line will be fed.

Print an image to the printer.

Parameters:

• EscposImage $img: The image to print.
• int $size: Output size modifier for the image.

Size modifiers are:

• IMG_DEFAULT (leave image at original size)
• IMG_DOUBLE_WIDTH
• IMG_DOUBLE_HEIGHT

A minimal example:

<?php
$img = new EscposImage("logo.png");
$printer -> graphics($img);

See the example/ folder for detailed examples.

The function bitImage() takes the same parameters, and can be used if your printer doesn't support the newer graphics commands.

Initialize printer. This resets formatting back to the defaults.

Generate a pulse, for opening a cash drawer if one is connected. The default settings (0, 120, 240) should open an Epson drawer.

Parameters:

• int $pin: 0 or 1, for pin 2 or pin 5 kick-out connector respectively.
• int $on_ms: pulse ON time, in milliseconds.
• int $off_ms: pulse OFF time, in milliseconds.

Print the given data as a QR code on the printer.

• string $content: The content of the code. Numeric data will be more efficiently compacted.
• int $ec Error-correction level to use. One of Escpos::QR_ECLEVEL_L (default), Escpos::QR_ECLEVEL_M, Escpos::QR_ECLEVEL_Q or Escpos::QR_ECLEVEL_H. Higher error correction results in a less compact code.
• int $size: Pixel size to use. Must be 1-16 (default 3)
• int $model: QR code model to use. Must be one of Escpos::QR_MODEL_1, Escpos::QR_MODEL_2 (default) or Escpos::QR_MICRO (not supported by all printers).

Select print mode(s).

Parameters:

• int $mode: The mode to use. Default is Escpos::MODE_FONT_A, with no special formatting. This has a similar effect to running initialize().

Several MODE_* constants can be OR'd together passed to this function's $mode argument. The valid modes are:

• MODE_FONT_A
• MODE_FONT_B
• MODE_EMPHASIZED
• MODE_DOUBLE_HEIGHT
• MODE_DOUBLE_WIDTH
• MODE_UNDERLINE

Set barcode height.

Parameters:

• int $height: Height in dots. If not specified, 8 will be used.

Turn double-strike mode on/off.

Parameters:

• boolean $on: true for double strike, false for no double strike.

Turn emphasized mode on/off.

Parameters:

• boolean $on: true for emphasis, false for no emphasis.

Select font. Most printers have two fonts (Fonts A and B), and some have a third (Font C).

Parameters:

• int $font: The font to use. Must be either Escpos::FONT_A, Escpos::FONT_B, or Escpos::FONT_C.

Select justification.

Parameters:

• int $justification: One of Escpos::JUSTIFY_LEFT, Escpos::JUSTIFY_CENTER, or Escpos::JUSTIFY_RIGHT.

Set black/white reverse mode on or off. In this mode, text is printed white on a black background.

Parameters:

• boolean $on: True to enable, false to disable.

Set underline for printed text.

Parameters:

• int $underline: Either true/false, or one of Escpos::UNDERLINE_NONE, Escpos::UNDERLINE_SINGLE or Escpos::UNDERLINE_DOUBLE. Defaults to Escpos::UNDERLINE_SINGLE.

Add text to the buffer. Text should either be followed by a line-break, or feed() should be called after this.

Parameters:

• string $str: The string to print.

Posts I've written up for people who are learning how to use receipt printers:

• What is ESC/POS, and how do I use it?, which documents the output of test.php.
• Setting up an Epson receipt printer
• Getting a USB receipt printer working on Linux

Some forks of this project have been developed by others for specific use cases. Improvements from the following projects have been incorporated into escpos-php:

• wdoyle/EpsonESCPOS-PHP
• ronisaha/php-esc-pos

Epson notes that not all of its printers support all ESC/POS features, and includes a table in their documentation:

• FAQ about ESC/POS from Epson

Note that many printers produced by other vendors use the same standard, and are compatible by varying degrees.