面对使用PDO for mySQL的问题

Question

while using the following constructor

$this->pdo = new PDO ($this->source, $this->username, $this->password);

if I do not have any password then should I pass a NuLL value for creating a new instance of PDO?

Answer 1

Have you checked the documentation?

PDO::__construct()

PDO::__construct ( string $dsn [, string $username [, string $password [, array $driver_options ]]] )

The only required parameter is the DSN, username and password are optional.