如何从PHP应用打印物理收据？mike42/escpos-php助你轻松搞定

<code class="bash">composer require mike42/escpos-php</code>

<code class="php">use Mike42\Escpos\PrintConnectors\NetworkPrintConnector;
use Mike42\Escpos\Printer;

try {
    // 连接到打印机，替换为你的打印机IP和端口
    $connector = new NetworkPrintConnector("192.168.1.100", 9100);
    $printer = new Printer($connector);

    // ... 在这里编写你的打印逻辑 ...

} finally {
    // 确保在任何情况下都关闭连接，释放资源
    if (isset($printer)) {
        $printer->close();
    }
}</code>

<code class="php">use Mike42\Escpos\CapabilityProfile;
use Mike42\Escpos\PrintConnectors\WindowsPrintConnector;
use Mike42\Escpos\Printer;

// 加载针对特定打印机型号的配置，例如“simple”或“SP2000”
$profile = CapabilityProfile::load("simple"); // 适用于大多数基本打印机
$connector = new WindowsPrintConnector("smb://computer/printer_share_name");
$printer = new Printer($connector, $profile);

// ... 打印逻辑 ...
$printer->close();</code>

<code class="php"><?php
require __DIR__ . '/vendor/autoload.php';

use Mike42\Escpos\PrintConnectors\NetworkPrintConnector; // 或 FilePrintConnector, WindowsPrintConnector
use Mike42\Escpos\Printer;
use Mike42\Escpos\EscposImage; // 如果需要打印图片

try {
    // 假设你的打印机是网络连接的，IP为192.168.1.100，端口9100
    $connector = new NetworkPrintConnector("192.168.1.100", 9100);
    $printer = new Printer($connector);

    // 初始化打印机，重置所有格式
    $printer->initialize();

    // 设置居中对齐
    $printer->setJustification(Printer::JUSTIFY_CENTER);
    // 打印标题
    $printer->setTextSize(2, 2); // 字体放大2倍
    $printer->setEmphasis(true); // 加粗
    $printer->text("咖啡馆收据\n");
    $printer->setEmphasis(false); // 取消加粗
    $printer->setTextSize(1, 1); // 恢复默认字体大小
    $printer->text("--------------------------------\n");

    // 设置左对齐
    $printer->setJustification(Printer::JUSTIFY_LEFT);
    $printer->text("订单号: #12345\n");
    $printer->text("日期: " . date('Y-m-d H:i:s') . "\n");
    $printer->text("--------------------------------\n");

    // 打印商品列表
    $printer->text("美式咖啡 x1           15.00\n");
    $printer->text("拿铁 x2               40.00\n");
    $printer->text("芝士蛋糕 x1           28.00\n");
    $printer->text("--------------------------------\n");

    // 打印总计
    $printer->setJustification(Printer::JUSTIFY_RIGHT);
    $printer->setTextSize(1, 2); // 高度放大2倍
    $printer->text("总计: 83.00 元\n");
    $printer->setTextSize(1, 1); // 恢复默认
    $printer->setJustification(Printer::JUSTIFY_LEFT);

    // 打印二维码 (例如，用于支付或会员)
    $printer->qrCode("https://your-website.com/order/12345", Printer::QR_ECLEVEL_L, 8);
    $printer->text("扫码查看订单详情\n");

    // 进纸3行
    $printer->feed(3);
    // 全切纸
    $printer->cut();

} catch (Exception $e) {
    echo "打印失败: " . $e->getMessage() . "\n";
} finally {
    // 确保关闭连接
    if (isset($printer)) {
        $printer->close();
    }
}</code>