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I tried it with the function extracted from this page:

I added the code to my functions.php, but I can't find any element with the class 'parent-menu-item', despite having several pages with sub-items in my WordPress installation.

What could I possibly be doing wrong here? Any other functions in my functions.php are working without problems.

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Can you show me the code and send me the site URL? – Vinod Dalvi Apr 15 '13 at 9:04
The site URL is The code in my functions.php has been copy & pasted from the URL mentioned in my original post, I changed nothing. Thanks for your help. – Ulf Klose Apr 15 '13 at 9:45
You're aware that there are already parent and ancestor classes by default? current_page_ancestor and current_page_parent ? There are variants for menu ancestors where the item is a link or post rather than a page too, you don't need a custom class – Tom J Nowell Apr 15 '13 at 10:39
What I want to achieve is that in my main menu, if an element has child elements there should be a special icon near the element itself to show that there's a list of children to display. – Ulf Klose Apr 15 '13 at 13:26

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