How to fix the error "Error: Class 'SQLite3' not found in /var/www/test.site/public_html/news/NewsDB.class.php on line 17"?

Question

SQLite

There is the following code

class NewsDB implements INewsDB{
    const DB_NAME = __DIR__.'/news.db';
    private $_db;

    function __get($name) {
      // TODO: Implement __get() method.
      if($name == 'db'){
        return $this->_db;
      }
      throw new Exception('Unknown property!!!');
    }

    function __construct() {
      $this->_db = new SQLite3(self::DB_NAME);
    }

    function __destruct() {
      // TODO: Implement __destruct() method.
      unset($this->_db);
    }

    function saveNews($title, $category, $description, $source) {
      // TODO: Implement saveNews() method.
    }

    function getNews() {
      // TODO: Implement getNews() method.
    }

    function deleteNews($id) {
      // TODO: Implement deleteNews() method.
    }
  }

I create a new object
$news = new NewsDB();
and get an error

Fatal error: Uncaught Error: Class 'SQLite3' not found in /var/www/test.site/public_html/news/NewsDB.class.php on line 17

Installed sqlite3 but it didn't solve the problem.
Do you have any ideas where to go next?
Thanks in advance.

Answer 1

sudo apt-get install php7.0-sqlite3
To see files starting with a dot (hidden files) in the terminal, you need to type ls -a
PhpStorm sees such files by default