src/PEAR/Config.php
function getGroup($key)
    {
        if (isset($this->configuration_info[$key])) {
            return $this->configuration_info[$key]['group'];
        }

        return false;
    }
function getGroup($key)
    {
        if (isset($this->configuration_info[$key])) {
            return $this->configuration_info[$key]['group'];
        }

        return false;
    }
Get the parameter group for a config key.

@param string  config key
@return string parameter group

@access public