PHP PDO vs normal mysql_connect

Question

Should I use php PDO or normal mysql_connect to execute database queries in PHP?

Which one is faster?

One of the big benefits of PDO is that the interface is

Answer 1

PDO database connection code:

setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
}

catch(PDOException $e) {
    echo "Connection error: ".$e->getMessage();
}
?>

Normal MySQL database connection code:

or

MySQL database connection code easy but PDO has many advantage.