<?php

$dsn = "mysql:dbname=...;host=...";
$dbuser = "...";
$dbpass = "...";

try {

	$pdo = new PDO($dsn, $dbuser, $dbpass);

	echo "Conexão estabelecida com sucesso!";

} catch (PDOException $e) {

	echo "ERRO: " . $e->getMessage();

}

?>