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I'm using WP Custom Search plugin to generate Advanced Search in one of my newly developed WP site. Though the plugin is not completely bug-free, but it's working just fine (excepts some Undefined Offset warnings, I'm ignoring them for its better support in searching).

But recently noticed that the wp_nav_menu() on the header.php is not working when I'm on the search page. It's a simple code as it's used in many of my WP sites:

<?php wp_nav_menu( array( 'theme_location' => 'header_menu', 'menu_class' => 'site-header-menu' ) ); ?>

That's working on all other pages, BUT the search.php - a typical search template.

I've tried the most-cited solution from:

Typically the search page contains a ?s= on the URL, but using this plugin, I'm getting:


Is that a cause I'm failing echoing the menu? (Live site here, and the Advanced Search is on the left)

share|improve this question
I tried sultanstationery.com/?s=test and the menu is being shown. So as you have already figured the plugin probably cause that. Have you tried the wp_get_nav_menu_items function to see what you get when you are on a search page? – Laxmana May 8 '14 at 17:04
It appears to be an issue with the plugin, see this support thread. – Milo May 8 '14 at 17:06
@Laxmana just tried wp_get_nav_menu_items() - it's returning the menu array in all the pages, except the Search page. – Mayeenul Islam May 8 '14 at 18:39
I see. Sorry but I can't think a way to help you more. If you find the solution (as far as I searched there are other people having the same problem) please post it. It would be very useful. – Laxmana May 9 '14 at 11:50
up vote 1 down vote accepted

As Milo stated, it seems it's a problem of the plugin. And solely for this project of mine, I'm not going for such a big dig out, and I'm actually going for a fallback. I repeat, it's not a solution, just a problem hiding measure.

I checked, as Laxmana said that, is there any menu items found there. If there're menu items, show the menu items as a nav_menu, if not, show the default menu (in my case, I'm just showing the "Home" button there - as my site demands that urgently).

        $menu_name = 'header_menu';
        $locations = get_nav_menu_locations();
        $menu = wp_get_nav_menu_object( $locations[ $menu_name ] );
        $menuitems = wp_get_nav_menu_items( $menu->term_id );
        <?php if( !empty($menuitems) ) { ?>
        <?php wp_nav_menu( array( 'theme_location' => 'header_menu', 'menu_class' => 'site-header-menu' ) ); ?>
        <?php } else { ?>
        <div class="menu-top-menu-container">
            <ul class="site-header-menu" id="menu-top-menu">
                <li class="no-margin">
                    <a href="<?php echo home_url('/'); ?>">Home</a>
        <?php } ?>
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