public function getNumeric($varname)
    {
        $value = $this->getString($varname);
        return is_numeric($value) ? $value + 0 : null;
    }
public function getNumeric($varname)
    {
        $value = $this->getString($varname);
        return is_numeric($value) ? $value + 0 : null;
    }
public function getNumeric ( $ varname ) { $ value = $ this -> getString ( $ varname ) ; return is_numeric ( $ value ) ? $ value + 0 : null ; }
Gets configuration option value as an integer.

@param string $varname  The configuration option name.
@return null|int|float  Null if configuration option does not exist or is not numeric.
The configuration option value (integer or float) otherwise.
Gets configuration option value as an integer .