Koneksi PDO MYSQL dengan Penanganan error

 <?php

/*

keterangan : nama database nya = pesan

             nama tabel nya  = pesan

             Struktur tabel : ID(AUTO INCREMENT PRIMARY KEY),nama,email,subjek,pesan

MADE BY johannes

*/

try {

    $conn = new PDO("mysql:host = localhost;dbname  = pesan", "root", "");

    $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

    /*pdo CREATE

$res = $conn->query("INSERT into pesan.pesan VALUES(1,'JOHN','JOG@yahoo.com','kamu','Kamu cantik')");

echo $res->rowCount() . "berhasil tambah data";*/

    /*PDO READ

$read = $conn->query("SELECT * from pesan.pesan");

while ($row  = $read->fetch()) {

    echo $row['nama'];

}

*/

    /*

PDO UPDATE

$update = $conn->query("UPDATE pesan.pesan SET nama = 'asep' where id = '1'");

echo $update->rowCount() . 'data diperbaruhi';*/

    /*

PDO DELETE

delete = $conn->query("DELETE  from pesan.pesan where id = '1'");

echo $delete->rowCount() . "berhasil delete data anda";

*/

    $conn = null;

} catch (PDOException $error) {

    die("koneksi gagal" . $error->getMessage());

}