original_string: protected function getPDO()
      {
          if (null === $this->pdo) {
              $this->pdo = new \PDO($this->dsn, $this->user, $this->password, $this->options);
          }
          return $this->pdo;
      }
code: protected function getPDO()
      {
          if (null === $this->pdo) {
              $this->pdo = new \PDO($this->dsn, $this->user, $this->password, $this->options);
          }
          return $this->pdo;
      }
code_tokens: protected function getPDO ( ) { if ( null === $ this -> pdo ) { $ this -> pdo = new \ PDO ( $ this -> dsn , $ this -> user , $ this -> password , $ this -> options ) ; } return $ this -> pdo ; }
docstring: Get PDO object. Cache the result
  
  @return \PDO
docstring_tokens: Get PDO object . Cache the result