Magento 1.9 problem call Helper

Question

My Config.xml

    <?xml version="1.0"?>  <config>
      <modules>
        <MyCompany_MyModule>
          <version>1.0.0</version>
        </MyCompany_MyModule>
     </modules>
     <global>
       <helpers>
          <mycompany_mymodule>
             <class>MyCompany_MyModule_Helper</class>
          </mycompany_mymodule>
       </helpers>
     </global>
   </config>

Path Helper

http\app\code\local\MyCompany\MyModule\Helper

File i want call

http\app\code\local\MyCompany\MyModule\Helper\Config.php

My Config.php Class

class MyCompany_MyModule_Helper_Config {}

My Class inside Model call Helper

http\app\code\local\MyCompany\MyModule\Model\Form\FileName.php

The Call

class MyCompany_MyModule_Model_Form_Input {
public function initializes()
{    
$helper = Mage::helper('MyCompany_MyModule/Config');
 Mage::Log($helper);
 } }

The Error

Warning: include(): Failed opening 'Mage/MyCompany/MyModule/Helper/Config.php' for inclusion 

My http\app\etc\modules\MyCompany_MyModule.xml

<?xml version="1.0"?> <config>
<modules>
    <MyCompany_MyModule>
        <active>true</active>
        <codePool>local</codePool>
    </MyCompany_MyModule>
</modules> </config>

Answer 1

Try this:

you can load your custom helper MyCompany_MyModule_Helper_Config located in

app/code/local/MyCompany/MyModule/Helper/Config.php

$helper = Mage::helper('mycompany_mymodule/config');

Answer 2

Try after disabling compilation and flush cache confirm below code.

<global>
    <helpers>
        <mycompany_mymodule>
            <class>MyCompany_MyModule_Helper</class>
        </mycompany_mymodule>
    </helpers>
</global>

Also, need to confirm that Config.php file executable for web server user

you can call that by this Mage::helper('mycompany_mymodule/config');

Answer 3

1. Rename your helper from

   app/code/local/MyCompany/MyModule/Helper/Config.php

   to

   app/code/local/MyCompany/MyModule/Helper/Data.php

2. app/code/local/MyCompany/MyModule/Helper/Data.php:

   <?php
   class MyCompany_MyModule_Helper_Data extends Mage_Core_Helper_Abstract{
   
       public function workMyHelper() {
           return "It works now !";
       }
   }
   

3. You call your helper function like this:

   Mage::helper('mycompany_mymodule')->workMyHelper();