public function exists(string $url = null): bool
	{
		$urls = $this->getPageList();
		if (isset($urls[$url])) {
			return true;
		} else {
			return false;
		}
	}
public function exists(string $url = null): bool
	{
		$urls = $this->getPageList();
		if (isset($urls[$url])) {
			return true;
		} else {
			return false;
		}
	}
public function exists ( string $ url = null ) : bool { $ urls = $ this -> getPageList ( ) ; if ( isset ( $ urls [ $ url ] ) ) { return true ; } else { return false ; } }
Je URL v databazi
@param string|null $url
@return bool
@throws Throwable
Je URL v databazi