public function get_size()
  {
    if ( $this->file && $this->size === 0 ){
      $this->size = filesize($this->file);
    }
    return $this->size;
  }
public function get_size()
  {
    if ( $this->file && $this->size === 0 ){
      $this->size = filesize($this->file);
    }
    return $this->size;
  }
public function get_size ( ) { if ( $ this -> file && $ this -> size === 0 ) { $ this -> size = filesize ( $ this -> file ) ; } return $ this -> size ; }
Return the filesize in byte.

```php
$file = new bbn\file('C:/Test/file.txt');
bbn\x::dump($file->get_size());
// (int) 314
```

@return int
Return the filesize in byte .