<?php
    $host = 'localhost';
    $db_name = 'my_db';
    $user = 'root';
    $pass = '';
    try {
        $pdo = new PDO("mysql:host={$host};dbname={$db_name}", $user, $pass);
    } catch (PDOException $exp) {
        echo "PDOException:". $exp->getMessage();
        die();
    }
    $select = $pdo->prepare("SELECT * FROM table;");
    $select->execute();
    $result = $select->fetchAll();
    print_r($result);
?>