Best way to get data from a query

I do not know if this is the best way, but you can use the form tag to do that. You must create a form for each option you want, such as deletion or editing. The difference is that you need an input type submit for this, instead of the text in i.

For example:

<?php
echo "<form method='post' action='deleta.php'>";
echo "<input type='hidden' value='".$row['id']."'> ";
echo "<input type='submit' value='Deletar'>";
echo "</form>";
?>

Notice that I put ID value as an input type hidden field. This way you can access it on the PHP page where the form is sent. The extra work would be to stylise the input button to whatever way you need it.

I hope you have helped.

There is no better way, what exists is the way that most suits your purpose, in the case below, is a simple example, using PDO:

class Database {

        private static $servidor = 'localhost'; // Servidor, no caso poderia ser também localhost
        private static $usuario = 'root'; // usuário do banco de dados
        private static $senha = 'senha'; // senha do banco de dados
        private static $banco = 'banco'; // nome do banco de dados
        private static $instance = null;

        public static function getConnection() {
            if (!self::$instance instanceof PDO) {
                try {
                    self::$instance = new PDO('mysql:host=' .
                    self::$servidor . ';dbname=' . 
                    self::$banco, 
                    self::$usuario, 
                    self::$senha);
                } catch (PDOException $exc) {
                    echo "Erro ao conectar :: {$exc->getMessage()}";
                }
            }
            return self::$instance;
        }

        public function fetchAll($query) {
            $con = self::getConnection();

            $stmt = $con->prepare($query);

            $this->execute($stmt);

            if ($stmt->rowCount()) {
                return $stmt->fetchAll(PDO::FETCH_OBJ);
            } else {
                return false;
            }
        }

        public function execute(PDOStatement $stmt, array $data = null) {
            try {
                if (isset($data)) {
                    $stmt->execute($data);
                } else {
                    $stmt->execute();
                }
            } catch (PDOException $exc) {
                echo $exc->getTraceAsString();
            }
        }

        public function action($sql, array $data) {
            $con = self::getConnection();
            $stmt = $con->prepare($sql);
            $this->execute($stmt, $data);
            if ($stmt->rowCount()) {
                return true;
            } else {
                return false;
            }
        }
}

$conexao = new Database();

//listando...
$collection = $conexao->fetchAll("SELECT * FROM tabela");

foreach ($collection as $data) {
      echo $data['campo'] . '<br>';
}

//deletando...
 $deletou = $conexao->action('DELETE FROM tabela WHERE id=:id',array('id' => (int) $id));
 if ($deletou) {
   echo "apagou!";
 }

//inserindo
$insert = $conexao->action("INSERT INTO tabela (campo1, campo2) values (:campo1,:campo2)",array('campo1'=>'valor1','campo2'=>'valor2'));
 if ($insert) {
   echo "gravou!";
 }
//atualizando
$update = $conexao->action("UPDATE tabela SET campo1=:campo1, campo2=:campo2 where id=:id",array('campo1'=>'valor1','campo2'=>'valor2','id' => (int) $id));
 if ($update) {
   echo "atualizou!";
 }