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我们正在为货币兑换商开发一个基于 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) 打印机作为客户收据，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，我们尝试了 mike42/escpos-php PHP 库并使用它让 USB 收据打印机在 Windows 教程上工作，但它不起作用。这是我们第一次使用 POS 打印机，所以我们完全迷路了。任何人都可以帮助解决这个问题吗？提前致谢。 细节 ：

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";
    }
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1 回答 1

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希望这对其他人有帮助。您需要先安装驱动程序。然后编写如下代码。WindowsPrintConnector 是用来创建连接器对象的。这对我来说适用于 Laravel。

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";
    }
于 2019-10-04T00:40:40.217 回答