问将composer添加到现有的代码点火器项目中

EN

/*
 * --------------------------------------------------------------------
 * LOAD THE BOOTSTRAP FILE
 * --------------------------------------------------------------------
 *
 * And away we go...
 */
include_once './vendor/autoload.php';
require_once BASEPATH.'core/CodeIgniter.php';

{
        "description": "The CodeIgniter framework",
        "name": "codeigniter/framework",
        "type": "project",
        "homepage": "https://codeigniter.com",
        "license": "MIT",
        "support": {
            "forum": "http://forum.codeigniter.com/",
            "wiki": "https://github.com/bcit-ci/CodeIgniter/wiki",
            "slack": "https://codeigniterchat.slack.com",
            "source": "https://github.com/bcit-ci/CodeIgniter"
        },
        "require": {
            "php": ">=5.3.7",
            "mpdf/mpdf": "^8.0"
        },
        "suggest": {
            "paragonie/random_compat": "Provides better randomness in PHP 5.x"
        },
        "require-dev": {
            "mikey179/vfsStream": "1.1.*",
            "phpunit/phpunit": "4.* || 5.*"
        }
    }

    <?php
defined('BASEPATH') OR exit('No direct script access allowed');

class TestingGround extends CI_Controller{
    public function index() {
        $this->load->view("testing_ground");
    }
    public function pdf(){

      $mpdf = new mPDF();

      // Write some HTML code:

      $mpdf->WriteHTML('Hello World');

      // Output a PDF file directly to the browser
      $mpdf->Output();

      }
}