src/Ease/SQL/PDO.php
public function connect()
    {
        if (is_null($this->dbType)) {
            $result = null;
        } else {
            switch ($this->dbType) {
                case 'mysql':
                    $this->sqlLink = new \PDO($this->dbType.':dbname='.$this->database.';host='.$this->server.';port='.$this->port.';charset=utf8',
                        $this->username, $this->password,
                        [\PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES \'utf8\'']);
                    break;
                case 'pgsql':
                    $this->sqlLink = new \PDO($this->dbType.':dbname='.$this->database.';host='.$this->server.';port='.$this->port,
                        $this->username, $this->password);
                    if (is_object($this->sqlLink)) {
                        $this->sqlLink->query("SET NAMES 'UTF-8'");
                    }
                    break;

                default:
                    throw new \Ease\Exception(_('Unimplemented Database type').': '.$this->dbType);
                    break;
            }

            if (is_object($this->sqlLink)) {
                $this->errorNumber = $this->sqlLink->errorCode();
                $this->errorText   = $this->sqlLink->errorInfo();
            } else {
                $result = false;
            }
            if ($this->errorNumber != '00000') {
                $this->addStatusMessage('Connect: error #'.$this->errorNumer.' '.$this->errorText,
                    'error');

                $result = false;
            } else {
                $result = parent::connect();
            }
        }

        return $result;
    }
public function connect()
    {
        if (is_null($this->dbType)) {
            $result = null;
        } else {
            switch ($this->dbType) {
                case 'mysql':
                    $this->sqlLink = new \PDO($this->dbType.':dbname='.$this->database.';host='.$this->server.';port='.$this->port.';charset=utf8',
                        $this->username, $this->password,
                        [\PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES \'utf8\'']);
                    break;
                case 'pgsql':
                    $this->sqlLink = new \PDO($this->dbType.':dbname='.$this->database.';host='.$this->server.';port='.$this->port,
                        $this->username, $this->password);
                    if (is_object($this->sqlLink)) {
                        $this->sqlLink->query("SET NAMES 'UTF-8'");
                    }
                    break;

                default:
                    throw new \Ease\Exception(_('Unimplemented Database type').': '.$this->dbType);
                    break;
            }

            if (is_object($this->sqlLink)) {
                $this->errorNumber = $this->sqlLink->errorCode();
                $this->errorText   = $this->sqlLink->errorInfo();
            } else {
                $result = false;
            }
            if ($this->errorNumber != '00000') {
                $this->addStatusMessage('Connect: error #'.$this->errorNumer.' '.$this->errorText,
                    'error');

                $result = false;
            } else {
                $result = parent::connect();
            }
        }

        return $result;
    }
Perform connect to database.

@return false|null connecting result true: connected, false: error, null: no SQL configured