function createExrule() {
    $cnt = count( $this->exrule );
    if( 0 >= $cnt )
      return;
    $exrule = 'EXRULE';
    return $this->_format_recur( $exrule, $this->exrule );
  }
function createExrule() {
    $cnt = count( $this->exrule );
    if( 0 >= $cnt )
      return;
    $exrule = 'EXRULE';
    return $this->_format_recur( $exrule, $this->exrule );
  }
function createExrule ( ) { $ cnt = count ( $ this -> exrule ) ; if ( 0 >= $ cnt ) return ; $ exrule = 'EXRULE' ; return $ this -> _format_recur ( $ exrule , $ this -> exrule ) ; }
creates formatted output for calendar component property exrule

@author Kjell-Inge Gustafsson <ical@kigkonsult.se>
@since 0.7.28 - 2006-09-13
@return string
creates formatted output for calendar component property exrule