Ansluter Heroku Lumen-appen till Amazon RDS MySQL 5.7.19

Du har inte sagt till din databasfil att använda SSL.

<?php

$url = parse_url(getenv("DATABASE_URL"));
$host = $url["host"];
$username = $url["user"];
$password = $url["pass"];
$database = substr($url["path"], 1);

return [

'default' => 'mysql',

'connections' => [

    'mysql' => [
        'driver' => 'mysql',
        'port' => '3306',
        'host'      => $host,
        'database'  => $database,
        'username'  => $username,
        'password'  => $password,
        'charset' => 'utf8mb4',
        'collation' => 'utf8mb4_unicode_ci',
        'prefix' => '',
        'strict' => true,
        'engine' => null,
        'options'  => array(
                    "sslmode" => "require",
                    "sslrootcert" => "config/amazon-rds-ca-cert.pem"
                )
    ],