<?php
    $host = "";
    $user = "";
    $pass = "";
    $database_name = "";

    try {
        $dbh = new PDO("mysql:host=$host;dbname=$database_name", $user, $pass);
    } catch (PDOException $e) {
        echo "Error: " . $e->getMessage() . "<br/>";
        die();
    }
?>