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PHP

Return next top level menu item as an object

<?php
/*
** -------------------------------------------
** Return next top level menu item
** -------------------------------------------
** usage: $next_menu_item = elbone_next_menu_item(get_the_ID(), 'primary');
*/

function elbone_next_menu_item($post_id, $menu_name) {

	if (($locations = get_nav_menu_locations()) && isset($locations[$menu_name])) {

		// Get the menu object
		$menu = wp_get_nav_menu_object($locations[$menu_name]);

		// Escape if no menu
		if (!isset($menu->term_id))
			return false;
			
		// Get all menu items
		$args = array(
			'order' => 'ASC',
			'orderby' => 'menu_order',
			'post_type' => 'nav_menu_item',
			'post_status' => 'publish',
			//'output' => OBJECT,
			'output_key' => 'menu_order',
			'nopaging' => true,
			'update_post_term_cache' => false 
		);
		$menu_items = wp_get_nav_menu_items($menu->term_id);

		// Escape if no menu items
		if (!isset($menu_items))
			return false;

		// Build array of menu item post IDs
		$post_ids = array();
		foreach ($menu_items as $key => $value) {
			$post_ids[] = get_post_meta($value->ID, '_menu_item_object_id', true);
		}

		// Get key of current post_id
		$current_post_key = array_search($post_id, $post_ids);
		$next_post_key = $current_post_key + 1;

		// if no item with that key return false
		if (!isset($post_ids[$next_post_key]))
			return false;

		// Got his far so lets return the post
		$next_post_ID = $post_ids[$next_post_key];
		return get_page($next_post_ID) ? get_page($next_post_ID) : get_post($next_post_ID);

	}
	
	return false;
}

?>
https://snipt.net/embed/6f5a483c932f6fa6ebc7bd9390ed9728/
/raw/6f5a483c932f6fa6ebc7bd9390ed9728/
6f5a483c932f6fa6ebc7bd9390ed9728
php
PHP
60
2019-07-16T06:00:10
True
False
False
Jul 18, 2013 at 01:48 AM
/api/public/snipt/68317/
-6375
<table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><a href="#L-1"> 1</a> <a href="#L-2"> 2</a> <a href="#L-3"> 3</a> <a href="#L-4"> 4</a> <a href="#L-5"> 5</a> <a href="#L-6"> 6</a> <a href="#L-7"> 7</a> <a href="#L-8"> 8</a> <a href="#L-9"> 9</a> <a href="#L-10">10</a> <a href="#L-11">11</a> <a href="#L-12">12</a> <a href="#L-13">13</a> <a href="#L-14">14</a> <a href="#L-15">15</a> <a href="#L-16">16</a> <a href="#L-17">17</a> <a href="#L-18">18</a> <a href="#L-19">19</a> <a href="#L-20">20</a> <a href="#L-21">21</a> <a href="#L-22">22</a> <a href="#L-23">23</a> <a href="#L-24">24</a> <a href="#L-25">25</a> <a href="#L-26">26</a> <a href="#L-27">27</a> <a href="#L-28">28</a> <a href="#L-29">29</a> <a href="#L-30">30</a> <a href="#L-31">31</a> <a href="#L-32">32</a> <a href="#L-33">33</a> <a href="#L-34">34</a> <a href="#L-35">35</a> <a href="#L-36">36</a> <a href="#L-37">37</a> <a href="#L-38">38</a> <a href="#L-39">39</a> <a href="#L-40">40</a> <a href="#L-41">41</a> <a href="#L-42">42</a> <a href="#L-43">43</a> <a href="#L-44">44</a> <a href="#L-45">45</a> <a href="#L-46">46</a> <a href="#L-47">47</a> <a href="#L-48">48</a> <a href="#L-49">49</a> <a href="#L-50">50</a> <a href="#L-51">51</a> <a href="#L-52">52</a> <a href="#L-53">53</a> <a href="#L-54">54</a> <a href="#L-55">55</a> <a href="#L-56">56</a> <a href="#L-57">57</a> <a href="#L-58">58</a> <a href="#L-59">59</a> <a href="#L-60">60</a></pre></div></td><td class="code"><div class="highlight"><pre><span></span><span id="L-1"><a name="L-1"></a><span class="cp">&lt;?php</span> </span><span id="L-2"><a name="L-2"></a><span class="cm">/*</span> </span><span id="L-3"><a name="L-3"></a><span class="cm">** -------------------------------------------</span> </span><span id="L-4"><a name="L-4"></a><span class="cm">** Return next top level menu item</span> </span><span id="L-5"><a name="L-5"></a><span class="cm">** -------------------------------------------</span> </span><span id="L-6"><a name="L-6"></a><span class="cm">** usage: $next_menu_item = elbone_next_menu_item(get_the_ID(), &#39;primary&#39;);</span> </span><span id="L-7"><a name="L-7"></a><span class="cm">*/</span> </span><span id="L-8"><a name="L-8"></a> </span><span id="L-9"><a name="L-9"></a><span class="k">function</span> <span class="nf">elbone_next_menu_item</span><span class="p">(</span><span class="nv">$post_id</span><span class="p">,</span> <span class="nv">$menu_name</span><span class="p">)</span> <span class="p">{</span> </span><span id="L-10"><a name="L-10"></a> </span><span id="L-11"><a name="L-11"></a> <span class="k">if</span> <span class="p">((</span><span class="nv">$locations</span> <span class="o">=</span> <span class="nx">get_nav_menu_locations</span><span class="p">())</span> <span class="o">&amp;&amp;</span> <span class="nb">isset</span><span class="p">(</span><span class="nv">$locations</span><span class="p">[</span><span class="nv">$menu_name</span><span class="p">]))</span> <span class="p">{</span> </span><span id="L-12"><a name="L-12"></a> </span><span id="L-13"><a name="L-13"></a> <span class="c1">// Get the menu object</span> </span><span id="L-14"><a name="L-14"></a> <span class="nv">$menu</span> <span class="o">=</span> <span class="nx">wp_get_nav_menu_object</span><span class="p">(</span><span class="nv">$locations</span><span class="p">[</span><span class="nv">$menu_name</span><span class="p">]);</span> </span><span id="L-15"><a name="L-15"></a> </span><span id="L-16"><a name="L-16"></a> <span class="c1">// Escape if no menu</span> </span><span id="L-17"><a name="L-17"></a> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nb">isset</span><span class="p">(</span><span class="nv">$menu</span><span class="o">-&gt;</span><span class="na">term_id</span><span class="p">))</span> </span><span id="L-18"><a name="L-18"></a> <span class="k">return</span> <span class="k">false</span><span class="p">;</span> </span><span id="L-19"><a name="L-19"></a> </span><span id="L-20"><a name="L-20"></a> <span class="c1">// Get all menu items</span> </span><span id="L-21"><a name="L-21"></a> <span class="nv">$args</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span> </span><span id="L-22"><a name="L-22"></a> <span class="s1">&#39;order&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;ASC&#39;</span><span class="p">,</span> </span><span id="L-23"><a name="L-23"></a> <span class="s1">&#39;orderby&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;menu_order&#39;</span><span class="p">,</span> </span><span id="L-24"><a name="L-24"></a> <span class="s1">&#39;post_type&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;nav_menu_item&#39;</span><span class="p">,</span> </span><span id="L-25"><a name="L-25"></a> <span class="s1">&#39;post_status&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;publish&#39;</span><span class="p">,</span> </span><span id="L-26"><a name="L-26"></a> <span class="c1">//&#39;output&#39; =&gt; OBJECT,</span> </span><span id="L-27"><a name="L-27"></a> <span class="s1">&#39;output_key&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39;menu_order&#39;</span><span class="p">,</span> </span><span id="L-28"><a name="L-28"></a> <span class="s1">&#39;nopaging&#39;</span> <span class="o">=&gt;</span> <span class="k">true</span><span class="p">,</span> </span><span id="L-29"><a name="L-29"></a> <span class="s1">&#39;update_post_term_cache&#39;</span> <span class="o">=&gt;</span> <span class="k">false</span> </span><span id="L-30"><a name="L-30"></a> <span class="p">);</span> </span><span id="L-31"><a name="L-31"></a> <span class="nv">$menu_items</span> <span class="o">=</span> <span class="nx">wp_get_nav_menu_items</span><span class="p">(</span><span class="nv">$menu</span><span class="o">-&gt;</span><span class="na">term_id</span><span class="p">);</span> </span><span id="L-32"><a name="L-32"></a> </span><span id="L-33"><a name="L-33"></a> <span class="c1">// Escape if no menu items</span> </span><span id="L-34"><a name="L-34"></a> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nb">isset</span><span class="p">(</span><span class="nv">$menu_items</span><span class="p">))</span> </span><span id="L-35"><a name="L-35"></a> <span class="k">return</span> <span class="k">false</span><span class="p">;</span> </span><span id="L-36"><a name="L-36"></a> </span><span id="L-37"><a name="L-37"></a> <span class="c1">// Build array of menu item post IDs</span> </span><span id="L-38"><a name="L-38"></a> <span class="nv">$post_ids</span> <span class="o">=</span> <span class="k">array</span><span class="p">();</span> </span><span id="L-39"><a name="L-39"></a> <span class="k">foreach</span> <span class="p">(</span><span class="nv">$menu_items</span> <span class="k">as</span> <span class="nv">$key</span> <span class="o">=&gt;</span> <span class="nv">$value</span><span class="p">)</span> <span class="p">{</span> </span><span id="L-40"><a name="L-40"></a> <span class="nv">$post_ids</span><span class="p">[]</span> <span class="o">=</span> <span class="nx">get_post_meta</span><span class="p">(</span><span class="nv">$value</span><span class="o">-&gt;</span><span class="na">ID</span><span class="p">,</span> <span class="s1">&#39;_menu_item_object_id&#39;</span><span class="p">,</span> <span class="k">true</span><span class="p">);</span> </span><span id="L-41"><a name="L-41"></a> <span class="p">}</span> </span><span id="L-42"><a name="L-42"></a> </span><span id="L-43"><a name="L-43"></a> <span class="c1">// Get key of current post_id</span> </span><span id="L-44"><a name="L-44"></a> <span class="nv">$current_post_key</span> <span class="o">=</span> <span class="nb">array_search</span><span class="p">(</span><span class="nv">$post_id</span><span class="p">,</span> <span class="nv">$post_ids</span><span class="p">);</span> </span><span id="L-45"><a name="L-45"></a> <span class="nv">$next_post_key</span> <span class="o">=</span> <span class="nv">$current_post_key</span> <span class="o">+</span> <span class="mi">1</span><span class="p">;</span> </span><span id="L-46"><a name="L-46"></a> </span><span id="L-47"><a name="L-47"></a> <span class="c1">// if no item with that key return false</span> </span><span id="L-48"><a name="L-48"></a> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nb">isset</span><span class="p">(</span><span class="nv">$post_ids</span><span class="p">[</span><span class="nv">$next_post_key</span><span class="p">]))</span> </span><span id="L-49"><a name="L-49"></a> <span class="k">return</span> <span class="k">false</span><span class="p">;</span> </span><span id="L-50"><a name="L-50"></a> </span><span id="L-51"><a name="L-51"></a> <span class="c1">// Got his far so lets return the post</span> </span><span id="L-52"><a name="L-52"></a> <span class="nv">$next_post_ID</span> <span class="o">=</span> <span class="nv">$post_ids</span><span class="p">[</span><span class="nv">$next_post_key</span><span class="p">];</span> </span><span id="L-53"><a name="L-53"></a> <span class="k">return</span> <span class="nx">get_page</span><span class="p">(</span><span class="nv">$next_post_ID</span><span class="p">)</span> <span class="o">?</span> <span class="nx">get_page</span><span class="p">(</span><span class="nv">$next_post_ID</span><span class="p">)</span> <span class="o">:</span> <span class="nx">get_post</span><span class="p">(</span><span class="nv">$next_post_ID</span><span class="p">);</span> </span><span id="L-54"><a name="L-54"></a> </span><span id="L-55"><a name="L-55"></a> <span class="p">}</span> </span><span id="L-56"><a name="L-56"></a> </span><span id="L-57"><a name="L-57"></a> <span class="k">return</span> <span class="k">false</span><span class="p">;</span> </span><span id="L-58"><a name="L-58"></a><span class="p">}</span> </span><span id="L-59"><a name="L-59"></a> </span><span id="L-60"><a name="L-60"></a><span class="cp">?&gt;</span><span class="x"></span> </span></pre></div> </td></tr></table>
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