<?php // login.php
$host = 'localhost'; // Change as necessary
$data = 'publications'; // Change as necessary
$user = 'root'; // Change as necessary
$pass = 'mysql'; // Change as necessary
$chrs = 'utf8mb4';
$attr = "mysql:host=$host;dbname=$data;charset=$chrs";
$opts =
[
    PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
    PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
    PDO::ATTR_EMULATE_PREPARES => false,
];
?>