Phergie_Config::offsetExists PHP Method

Checks to see if a configuration setting is assigned a value.

See also: ArrayAccess::offsetExists()

public offsetExists ( string $offset ) : boolean
$offset	string	Configuration setting name
return	boolean	TRUE if the setting has a value, FALSE otherwise

    public function offsetExists($offset)
    {
        return isset($this->settings[$offset]);
    }

Phergie_Config