小编los*_*1in的帖子

我试图在Slim中使用控制器但是不断收到错误

PHP Catchable致命错误:传递给
TopPageController :: __ construct()的参数1 必须是ContainerInterface的一个
实例,Slim\Container的实例给出

我的index.php

<?php
use \Psr\Http\Message\ServerRequestInterface as Request;
use \Psr\Http\Message\ResponseInterface as Response;

require '../vendor/autoload.php';
require 'settings.php';

spl_autoload_register(function ($classname) {
    require ("../classes/" . $classname . ".php");
});

$app = new \Slim\App(["settings" => $config]);
$app->get('/', function (Request $request, Response $response) {
    $response->getBody()->write("Welcome");
    return $response;
});
$app->get('/method1', '\TopPageController:method1');
$app->run();
?>

我的TopPageController.php

<?php
class TopPageController {
   protected $ci;
   //Constructor
   public function __construct(ContainerInterface $ci) {
       $this->ci = $ci;
   }

   public function method1($request, $response, $args) {
        //your code
        //to …

我需要将qt 5.5版与mxe一起使用，但找不到任何选项。我只看到qt是4.8.7，qt5是5.8，我仅限于两个版本之一，还是可以使用5.5。

谢谢

我试图从SLIM控制器显示动态生成的图像,但我得到一个空白屏幕.谢谢.

public function textToImage($request, $response, $args) {

    // The text to draw
    $text = "Hello World";
    $length=strlen($text);
    // Create the image

    $im = imagecreatetruecolor($length*12, 30);

    // Create some colors
    $white = imagecolorallocate($im, 255, 255, 255);
    $grey = imagecolorallocate($im, 128, 128, 128);
    $black = imagecolorallocate($im, 44, 62, 80);
    $boxcolor=imagecolorallocate($im, 95, 128, 149);

    $font = 'Helvetica.ttf';
    imagefilledrectangle($im, 0, 0, $length*9+$capitaladjust, 29, $white);
    imagettftext($im, 13, 0, 0, 20, $black, $font, $text);

    $response->getBody()->write(base64_encode($im));
    $response = $response->withHeader('Content-type', 'image/png');     
    return $response;
 }