thinkphp5 + Barcode-Methode zum Generieren von Barcodes

<?php
namespace app\index\controller;
use think\Controller;
/**
* 条形码操作类
*/
class Barcode extends Controller
{
    public function createBarcode()
    {
        $class_dir = VENDOR_PATH.&#39;barcode/class/&#39;;
        // Including all required classes
        require_once($class_dir.&#39;BCGFontFile.php&#39;);
        require_once($class_dir.&#39;BCGColor.php&#39;);
        require_once($class_dir.&#39;BCGDrawing.php&#39;);
        require_once($class_dir.&#39;BCGcode39.barcode.php&#39;);
        // Loading Font
        // 注意font和class是同一级文件夹
        $font = new \BCGFontFile(VENDOR_PATH.&#39;barcode/font/Arial.ttf&#39;, 18);// The arguments are R, G, B for color.
        $color_black = new \BCGColor(0, 0, 0);
        $color_white = new \BCGColor(255, 255, 255);
        $drawException = null;
        try {
            $code = new \BCGcode39();
            $code->setScale(2); // Resolution
            $code->setThickness(30); // Thickness
            $code->setForegroundColor($color_black); // Color of bars
            $code->setBackgroundColor($color_white); // Color of spaces
            $code->setFont($font); // Font (or 0)  0不显示文字
　　　　　    $text = isset($_GET[&#39;text&#39;]) ? $_GET[&#39;text&#39;] : &#39;HELLO&#39;;
            $code->parse($text); // Text
        } catch(Exception $exception) {
            $drawException = $exception;
        }
        /* Here is the list of the arguments
        1 - Filename (empty : display on screen)
        2 - Background color */
        $drawing = new \BCGDrawing(&#39;&#39;, $color_white);
        if($drawException) {
            $drawing->drawException($drawException);
        } else {
            $drawing->setBarcode($code);
            $drawing->draw();
        }
        // Header that says it is an image (remove it if you save the barcode to a file)
        header(&#39;Content-Type: image/png&#39;);
        header(&#39;Content-Disposition: inline; filename="barcode.png"&#39;);
        // Draw (or save) the image into PNG format.
        $drawing->finish(\BCGDrawing::IMG_FORMAT_PNG);
    }
    public function barcodedes()
    {
        return $this->fetch();
    }
}
?>

<img  src="{:url(&#39;createBarcode&#39;)}" alt="thinkphp5 + Barcode-Methode zum Generieren von Barcodes" >

<img  src="{:url(&#39;createBarcode&#39;,array(&#39;text&#39;= alt="thinkphp5 + Barcode-Methode zum Generieren von Barcodes" >&#39;123&#39;))}">

$text = isset($_GET['text']) ? $_GET['text'] : 'HELLO';

$text = input('text');      //接收的参数