Manage WordPress Orphan Menu Items (drop-in)

manage-orphan-menu-items.php

<?php

class Manage_Orphan_Menu_Items {
	
	function Manage_Orphan_Menu_Items() {
		add_action( 'admin_init', array( $this, 'process_menu_item_delete' ) );
		add_action( 'admin_menu', array( $this, 'add_admin_page' ) );
	}
	
	function add_admin_page() {
		add_submenu_page( 'tools.php', 'Orphan Menu Items', 'Orphan Menu Items', 'edit_theme_options', 'manage_orphan_menu_items', array( $this, 'options_page' ) );
	}
	
	function process_menu_item_delete() {

		if ( isset( $_GET['delete_nav_item_nonce'] ) && wp_verify_nonce( $_GET['delete_nav_item_nonce'], 'delete_nav_item' ) && isset( $_GET[ 'delete_nav_item' ] ) ) {
			wp_delete_post( absint( $_GET[ 'delete_nav_item' ] ), true );
		}

	}

	function options_page() {

		?>

		<div class="wrap">
			<?php

			screen_icon();
			echo '<h1>' . __( 'Manage Orphan Menu Items' ) . '</h1>';

			$q = new WP_Query( array(
				'post_type' => 'nav_menu_item',
				'nopaging' => true,
				'order' => 'ASC',
				'orderby' => 'menu_order',
				'posts_per_page' => -1
			) );
			if ( $q->have_posts() ) {
				echo '<table>';
				echo '<tr><th align="left">Menu Item</th><th align="left">Object Type</th><th align="left">Menu</th><th></th></tr>';
				while ( $q->have_posts() ) {
					$q->the_post();
					echo '<tr><td style="border-top: 1px solid #ccc;">';
					the_title();
					$o_id = get_post_meta( get_the_ID(), '_menu_item_object_id', true );
					$o_type = get_post_meta( get_the_ID(), '_menu_item_type', true );
					$o_object = get_post_meta( get_the_ID(), '_menu_item_object', true );
					if ( 'post_type' == $o_type ) {
						echo ' <strong>' . get_the_title( $o_id ) . '</strong>';
					} elseif ( 'taxonomy' == $o_type ) {
						$trm = get_term( $o_id, $o_object );
						echo ' <strong>' . $trm->name . '</strong>';
					}
					echo '</td><td style="border-top: 1px solid #ccc;">';
					printf( ' (%s, %s, %s)', $o_id, $o_type, $o_object );
					echo '</td><td style="border-top: 1px solid #ccc;">';
					$t = wp_get_object_terms( get_the_ID(), 'nav_menu', array( 'fields' => 'names' ) );
					if ( $t && ! is_wp_error( $t ) ) {
						echo implode( ', ', $t );
					}
					echo '</td><td style="border-top: 1px solid #ccc;">';
					if ( $t && ! is_wp_error( $t ) ) {
					} else {
						$del_url = wp_nonce_url( add_query_arg( array( 'delete_nav_item' => get_the_ID() ) ), 'delete_nav_item', 'delete_nav_item_nonce' );
						printf( '<a href="%s">Delete</a>', $del_url );
					}
					echo '</td></tr>';
				}
				echo '</table>';
				wp_reset_postdata();
			}

			?>
	 
		</div>
	 
		<?php
	}
	
}

new Manage_Orphan_Menu_Items();