<?php
//-------------------------------------------
// DB connection
//-------------------------------------------
$host = 'str_servername_url';
$db   = 'str_db_name';
$user = 'str_username';
$pass = 'str_password';
$charset = 'utf8mb4';
$options = [
    PDO::ATTR_ERRMODE            => PDO::ERRMODE_EXCEPTION,
    PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
    PDO::ATTR_EMULATE_PREPARES   => false,
];
$dsn = "mysql:host=$host;dbname=$db;charset=$charset";
try
{
    $pdo = new PDO($dsn, $user, $pass, $options);
}
catch (\PDOException $e)
{
    throw new \PDOException($e->getMessage(), (int)$e->getCode());
}
?>