Question

I am trying to use SSL with PDO and PDO MySQL but receiving a “PHP Fatal error: Undefined class constant ‘MYSQL_ATTR_SSL_CA'” for:

    $this->db = new PDO(
        "mysql:host=".$this->hostname.";dbname=".$this->database, 
        $this->username, 
        $this->password, 
        array(
            PDO::ATTR_PERSISTENT => true, 
            PDO::MYSQL_ATTR_SSL_CA => "path/to/mysql-ssl-ca-cert.pem" 
        )
    );

I have made sure that pdo_mysql is installed using phpinfo() and have had no problems using the code without SSL. I am on Ubuntu 3.9 using PHP 5.3.6-13. I have tried using other MYSQL_ATTR_.. and receive a similar error. Any thoughts on what might be happening?

Answer 1

PDO::MYSQL_ATTR_SSL_CA was defined as a constant 5.3.7 onwards.

You can look this up in the documentation: http://php.net/manual/en/ref.pdo-mysql.php#pdo.constants.mysql-attr-ssl-ca