使用Mike42 / Escpos-php PHP库打印POS（EPSON TM-U220D）打印机

Question

我们正在为货币兑换商开发基于PHP的Web应用程序。我们正在使用的货币兑换商使用POS（EPSON TM-U220D）打印机来接收客户收据，因此我们正在寻找一种从Web应用程序打印到POS打印机的方法，我们尝试使用mike42 / escpos-php PHP库并使用它使USB收据打印机可以在Windows教程上运行，但是不起作用。这是我们第一次使用POS打印机，因此我们完全迷失了。有人可以帮忙吗？提前致谢。详细信息：

Printer : [EPSON TM-U220D][1]
PHP Library : [Mike42/Escpos-php][1]
Tutorial : [Getting a USB receipt printer working on Windows][1]
Programming Languages : [PHP 7.2.0][1]
Web Server : [Apache][1]
Database : [MySQL][1]

代码：

    /*
    // Call this file 'hello-world.php' 
    require __DIR__ . '/inc/escpos/vendor/autoload.php';
    use Mike42\Escpos\PrintConnectors\FilePrintConnector;
    use Mike42\Escpos\Printer;
    $connector = new FilePrintConnector("php://stdout");
    $printer = new Printer($connector);
    $printer -> text("Hello World!\n");
    $printer -> cut();
    $printer -> close();


    */
    /* Change to the correct path if you copy this example! */
    require __DIR__ . '/inc/escpos/vendor/autoload.php';
    use Mike42\Escpos\Printer;
    use Mike42\Escpos\PrintConnectors\WindowsPrintConnector;
    /**
    * Install the printer using USB printing support, and the "Generic / Text     Only" driver,
    * then share it (you can use a firewall so that it can only be seen locally).
    *
    * Use a WindowsPrintConnector with the share name to print.
    *
    * Troubleshooting: Fire up a command prompt, and ensure that (if your printer is shared as
    * "Receipt Printer), the following commands work:
    *
    *  echo "Hello World" > testfile
    *  copy testfile "\\%COMPUTERNAME%\Receipt Printer"
    *  del testfile
    */
    try {
    // Enter the share name for your USB printer here
    $connector = null;
    //$connector = new WindowsPrintConnector("Receipt Printer");
    /* Print a "Hello world" receipt" */
    $printer = new Printer($connector);
    $printer -> text("Hello World!\n");
    $printer -> cut();

    /* Close printer */
    $printer -> close();
    } catch (Exception $e) {
    echo "Couldn't print to this printer: " . $e -> getMessage() . "\n";
    }

Answer 1

希望这会帮助其他人。您需要先安装驱动程序。然后，如下所示编写代码。 WindowsPrintConnector是用于创建连接器对象的一种。这对Laravel来说对我有用。

use Mike42\Escpos\PrintConnectors\FilePrintConnector;
use Mike42\Escpos\PrintConnectors\WindowsPrintConnector;
use Mike42\Escpos\Printer;
require 'C:\wamp64\www\myappname\vendor\autoload.php';
try {
    // Enter the share name for your USB printer here


    $connector = null;
        $connector = new WindowsPrintConnector("E-PoS 80mm Thermal Printer");
        /* Print a "Hello world" receipt" */
        $printer = new Printer($connector);
        $printer -> text("Hello World\n");
        $printer -> cut();

        /* Close printer */
        $printer -> close();
    } catch (Exception $e) {
        echo "Couldn't print to this printer: " . $e -> getMessage() . "\n";
    }