Use of my class inside the container gives me fatal error

1

Im trying to run my class with the container but when i execute it i get

Fatal error: Uncaught RuntimeException: Unexpected data in output buffer. Maybe you have characters before an opening <?php tag? in /srv/www/vendor/slim/slim/Slim/App.php:588 Stack trace: #0 /srv/www/vendor/slim/slim/Slim/App.php(377): Slim\App->finalize(Object(Slim\Http\Response)) #1 /srv/www/vendor/slim/slim/Slim/App.php(295): Slim\App->process(Object(Slim\Http\Request), Object(Slim\Http\Response)) #2 /srv/www/public/index.php(3): Slim\App->run() #3 {main} thrown in /srv/www/vendor/slim/slim/Slim/App.php on line 588

Maybe im doing this wrong, tell me if so

Added before $app->run();
$container[‘CronModel’]->add(‘foobar’);
function foobar() {
echo ‘im the foobar function’;
}

$container['CronModel']->execute();

Add to the container
$container[‘CronModel’] = function ($container) {
return new \App\Models\CronModel($container);
};

CronModel.php
<?php
namespace App\Models;

class CronModel 
{
  protected $container;
  protected $functions = []; 

  public function __construct($container)
  {
    $this->container = $container;
  }
  
  public function add($function, $args = [])
  {
    if (!is_numeric($function) and !is_integer($function)) {
      if (is_string($function) or is_array($function)) {
        $this->functions[] = [
          'name' => $function,
          'args' => $args
        ];
      }else{
        die('given function ('.$function.') must be an array or string');
      }
    }else{
      die('given function ('.$function.') must be an array or string');
    }
    
  }

  public function execute()
  {
    dump( $this->functions );
    foreach ($this->functions as $key => $function) {
      if (!empty($function['args'])) {
        call_user_func_array($function['name'], $function['args']);
      }else{
        call_user_func($function['name']);
      }
    }
  }
   
}
?>
2

I understood that

$container[‘CronModel’]->execute();

is executed before

$app->run()

Is that correct?

3

yes

$container[‘CronModel’]->execute();

is executed before app->run

4

Ok, so

$container[‘CronModel’]->execute();

calls foobar(), which has

echo ‘im the foobar function’;

in its body.
Slim does not like that any content (in your case ‘im the foobar function’) ist sent before $app->run()

5

Thanks for your replay, so basically just run it after slim or should i re-do the class ?