Problem for displaying the values of an Array on the front end

Question

Guys, good night. It is difficult to display the values of an array on the front end. In the backend it appears but on the front it does not.

My service task class where is the function that returns the array:

 public function procurar(){

       global $procura;

       $comando = $this->conexao->prepare("select tarefa, id_status from tb_tarefas where tarefa like :nome");
       $comando->bindValue(':nome', "%{$procura}%");
       $comando->execute();

       $inf = $comando->fetchAll(PDO::FETCH_OBJ);

       print_r($inf);

   }

Here is the part of the code responsible for giving command in the bank in the task class :

elseif($acao == 'procurar'){

        $tarefa = new Tarefa();

        $conexao = new Conexao();

        $procura = isset($_POST['procura']) ? $_POST['procura'] : "";

        $tarefaService = new TarefaService($conexao, $tarefa);
        $retorno = $tarefaService->procurar();

        header('location: buscar_tarefas.php?resultado=1');
    }

And then there at the front-end I opened the php block and had written the $return variable. I also gave a require Once to call the task classController:

<?php
 global $retorno;

print_r($retorno);
?>

Help me please, guys

Answer 1

What happens is that you are not returning any value in the search function, so the value of $return is as null.

To solve this, you must change print_r($inf); for return $inf;

Check out the documentation!

Answer 2

If the information process is not done on the same page where you want to print the result, you need to transfer the return from one page to another.

Just like the @PauloVictor said, you need a return in office first.

public function procurar(){

    global $procura;

    $comando = $this->conexao->prepare("select tarefa, id_status from tb_tarefas where tarefa like :nome");
    $comando->bindValue(':nome', "%{$procura}%");
    $comando->execute();

    $inf = $comando->fetchAll(PDO::FETCH_OBJ);

    return $inf;

}

After having this return, and if the data is processed on the same page that will be displayed the front, just give a print_r()which will be printed, otherwise use session, for example, to pass the information to another page.