Problem in getting url of custom module

Question

I am new to magento,I have created a custom module for magento backend. I don't know how to get its url, I have tried some help from online, nothing happens, please tell what should I pass into getUrl function.How should I use $url = Mage::helper("adminhtml")->getUrl('/your_module/index'); my file

confic.xml

<modules>
    <Petra_DailyOrders>
        <version>1.0.0</version>
    </Petra_DailyOrders>
</modules>

<global>
    <helpers>
        <petra_dailyorders>
            <!-- Helper definition needed by Magento -->
            <class>Mage_Core_Helper</class>
        </petra_dailyorders>
    </helpers>
</global>

<admin>
    <routers>
        <adminhtml>
            <args>
                <modules>
                    <petra_dailyorders before="Mage_Adminhtml">Petra_DailyOrders_Adminhtml</petra_dailyorders>
                </modules>
            </args>
        </adminhtml>
    </routers>
</admin>

<adminhtml>
    <layout>
        <updates>
            <petra>
                <file>dailyorders.xml</file>
            </petra>
        </updates>   
    </layout>
</adminhtml>

Answer 1

generate it like this:

$url = Mage::helper("adminhtml")->getUrl('admintml/your_module/index');

So you should place your controller in

Petra/DailyOrders/controllers/Adminhtml/ControllerName.php and call it like this

$url = Mage::helper("adminhtml")->getUrl('admintml/controllername/index');