Problem with PDO php 5.5.9 and mysql 5.4 on Ubuntu 14.04


I have created a droplet with one click app LAMP 14.04. I have read several help pages on how to enable PDO and have added and -lines to /etc/php5/apache2/php.ini and restarted apache.

In info.php:

Additional .ini files parsed include
/etc/php5/apache2/conf.d/05-opcache.ini, /etc/php5/apache2/conf.d/10-pdo.ini, /etc/php5/apache2/conf.d/20-apcu.ini, /etc/php5/apache2/conf.d/20-gd.ini, /etc/php5/apache2/conf.d/20-json.ini, /etc/php5/apache2/conf.d/20-mysql.ini, /etc/php5/apache2/conf.d/20-mysqli.ini, /etc/php5/apache2/conf.d/20-pdo_mysql.ini, /etc/php5/apache2/conf.d/20-readline.ini 

php -m on the command line shows PDO and pdo_mysql.

I have tried out learn what is wrong for a few hours now and can’t get the problem solved.

Thank you for your help in advance,

Antti Karttunen

Submit an answer
Answer a question...

This textbox defaults to using Markdown to format your answer.

You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!

Sign In or Sign Up to Answer

These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.

Accepted Answer


I actually work with PHP quite a bit, so if you can share the rest of the class, I can take a look at what’s running to see where there may be an issue. The snippet you provided cites a getPdo method, but I don’t see a reference to that.

As a quick reference, here’s a really simple MySQL Class that uses PDO.

use PDO;
use PDOException;

class MySql
    protected $db;
    protected $dbChar;
    protected $dbHost;
    protected $dbName;
    protected $dbOpts               =   [];
    protected $dbPass;
    protected $dbPort;
    protected $dbUser;
    protected $dsn;
    public function __construct( array $params )
            'dbChar' => $this->dbChar,
            'dbHost' => $this->dbHost,
            'dbName' => $this->dbName,
            'dbOpts' => $this->dbOpts,
            'dbPass' => $this->dbPass,
            'dbPort' => $this->dbPort,
            'dbUser' => $this->dbUser
        ) = $params;

        $this->dsn   = "mysql:";
        $this->dsn  .= "host=$this->dbHost;";
        $this->dsn  .= "dbname=$this->dbName;";

        if ( ! empty( $this->dbPort ) )
            $this->dsn  .= "port=$this->dbPort;";
            $this->dsn  .= "port:3306;";

        if ( ! empty( $this->dbChar ) )
            $this->dsn  .= "charset=$this->dbChar;";

    public function connect()
            $this->db = new PDO( $this->dsn, $this->dbUser, $this->dbPass, $this->dbOpts );

            if ( isset( $this->db ) )
                return $this->db;

            return false;
        catch ( PDOException $e )
            return $e->getMessage();

When constructed, you need to pass an array $params, for example:

$params =  [
    'dbChar'                        =>  'utf8',
    'dbHost'                        =>  'localhost',
    'dbName'                        =>  'mysqldbname',
    'dbOpts'                        =>  [
        PDO::ATTR_EMULATE_PREPARES      =>  false,
        PDO::ATTR_ERRMODE               =>  PDO::ERRMODE_EXCEPTION,
        PDO::ATTR_PERSISTENT            =>  true,
        PDO::ATTR_TIMEOUT               =>  30
    'dbPass'                        =>  'mysqldbpass',
    'dbPort'                        =>  '3306',
    'dbUser'                        =>  'mysqldbuser'

Note: You’ll need to change mysqldbname, mysqldbpass, and mysqldbuser to match yours.

So to create an instance of this MySql class, I’d use:

$db = new MySql( $params );

To connect, I’d then use:

$dbc = $db->connect();

Now I can run:

$vars    = [
    ':id' => 1

$query   = $dbc->prepare('SELECT * FROM tableName WHERE id = :id LIMIT 1');

$query->execute( $vars );

$results = $query->fetchAll();

var_dump( $results );

And that should dump the results from my query.

I just tested this locally and on a Droplet with PHP 7.x and 7.1 and it works, so if you run in to issues with the above, then there most likely is an issue with PDO not working. If that works, then the issue would be in your code.


What error(s) are you receiving when trying to make a connection via PDO and what does your code look like (for the connection)?

Want to learn more? Join the DigitalOcean Community!

Join our DigitalOcean community of over a million developers for free! Get help and share knowledge in Q&A, subscribe to topics of interest, and get courses and tools that will help you grow as a developer and scale your project or business.