CodeIgniter:4.0.3 FPDF-错误类"FPDF"未找到 [英] CodeIgniter: 4.0.3 FPDF - error Class 'FPDF' not found

问题描述

我正在尝试使用fpdf库从CodeIgniter:4.0.3生成PDF文档.我已将fpdf库复制到app/ThirdParty文件夹中.

I am trying to generate a PDF document from CodeIgniter: 4.0.3 using fpdf library. I have copied fpdf library in app/ThirdParty folder.

我已经在控制器的顶部添加了库引用.

I have included library reference at the top of controller like this.

    <?php namespace App\Controllers\Purchase;

     namespace App\ThirdParty\fpdf;

     use CodeIgniter\Controller;

     use FPDF;

我已经在控制器中创建了一个类，以扩展FPDF以包括这样的页眉和页脚.

I have created a class in the controller to extend FPDF to include header and footers like this.

    class PDF extends FPDF
    {

    
       function Header()
       {
       }
    
    }

我这样生成pdf.

       $pdf = new PDF();
       $pdf->AddPage();

运行应用程序时，出现此错误.

When I run the application, I get this error.

错误找不到"FPDF"类114类PDF扩展了FPDF

Error Class 'FPDF' not found 114 class PDF extends FPDF

该如何解决?

推荐答案

您应该检出fpdf lib中的任何名称空间.您似乎对它们和 use 字

You should checkout whatever your namespace in fpdf lib is. It looks like you're a bit confused about them and the use word

下面是一个有关如何加载 app/ThirdParty 文件夹下的lib的示例:

Here's an example on how to load a lib which is under the app/ThirdParty folder :

您的FPDF主类命名为 FPDF.php :

Your FPDF main class named FPDF.php :

<?php

// the path you need to follow to access your file
namespace App\ThirdParty;

class FPDF {
    
    public function __construct() {
        // do your things
    }
}

您的控制器名为 Foo.php :

<?php

namespace App\Controllers;

// the namespace of the lib file + its class name
use App\ThirdParty\FPDF;

class Foo extends \CodeIgniter\Controller {
    
    public function myPDF() {
        $pdf = new FPDF();
    }
}

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