How to pick up and display PHP deselected checkbox data

Question

I have a table where a column consists of checkbox. In the future, the status of these checks will be saved in a database for automatic loading, but at the moment, for the purpose of testing and also facilitating the understanding of the question, I just need to show the status of this check and its value. This is my PHP code so far:

<?php

// Verifica se usuário escolheu algum check
if(isset($_POST["nome"]) {
    echo "Os checks que você escolheu são: ";

    // Faz loop pelo array do check
    foreach ($_POST["nome"] as $check) {
        //pega o status do checkbox
        $_POST["nome"] = isset($_POST["nome"]) ? "checked" : null;
        $valor = $_POST["nome"];

        echo "$valor $check";
    }
}

When I SELECT a check it shows right:

However, DESELECT does not show anything. I don’t know much about PHP, but I imagine it’s like I haven’t selected anything. I need a solution as soon as possible.

P.S.: In the table there is a common form action directing to the PHP page and inside a input type:checkbox with onchange="this.form.submit()".