function setFooter($string,$margin = 0.50)
    {
        if (strlen($string) >= 255) {
            //carp 'Footer string must be less than 255 characters';
            return;
        }
        $this->_footer      = $string;
        $this->_margin_foot = $margin;
    }
function setFooter($string,$margin = 0.50)
    {
        if (strlen($string) >= 255) {
            //carp 'Footer string must be less than 255 characters';
            return;
        }
        $this->_footer      = $string;
        $this->_margin_foot = $margin;
    }
function setFooter ( $ string , $ margin = 0.50 ) { if ( strlen ( $ string ) >= 255 ) { //carp 'Footer string must be less than 255 characters';
 return ; } $ this -> _footer = $ string ; $ this -> _margin_foot = $ margin ; }
Set the page footer caption and optional margin.

@access public
@param string $string The footer text
@param float  $margin optional foot margin in inches.
Set the page footer caption and optional margin .