>>> [!note] Migrated issue <!-- Drupal.org comment --> <!-- Migrated from issue #3186377. --> Reported by: [solideogloria](https://www.drupal.org/user/3589277) >>> <h3 id="summary-problem-motivation">Problem/Motivation</h3> <p>I get this error after upgrading to PHP 7.4:</p> <blockquote><p>Notice: Trying to access array offset on value of type bool in menu_tree_add_active_path() (line 625 of .../menu_block/menu_block.module).<br> Notice: Trying to access array offset on value of type null in menu_tree_add_active_path() (line 625 of .../menu_block/menu_block.module).</p></blockquote> <h4 id="summary-steps-reproduce">Steps to reproduce</h4> <p>Create a menu block with a menu on a page that Anonymous users can access, but where they do not have access to any item in the menu. </p> <p>In this case, <code>menu_tree_check_access()</code> will filter out every single menu item, and <code>menu_tree_all_data()</code> will return an empty array. </p> <p>This passes that empty array into <code>menu_tree_add_active_path($tree);</code></p> <p>The error will occur when it calls the following:</p> <div class="codeblock"> <pre><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br>&nbsp; </span><span style="color: #FF8000">// Grab any menu item to find the menu_name for this tree.<br>&nbsp; </span><span style="color: #0000BB">$menu_item </span><span style="color: #007700">= </span><span style="color: #0000BB">current</span><span style="color: #007700">(</span><span style="color: #0000BB">$tree</span><span style="color: #007700">);<br>&nbsp; </span><span style="color: #0000BB">$tree_with_trail </span><span style="color: #007700">= </span><span style="color: #0000BB">menu_tree_page_data</span><span style="color: #007700">(</span><span style="color: #0000BB">$menu_item</span><span style="color: #007700">[</span><span style="color: #DD0000">'link'</span><span style="color: #007700">][</span><span style="color: #DD0000">'menu_name'</span><span style="color: #007700">]);<br></span><span style="color: #0000BB">?&gt;</span></span></pre></div> <p>This is because <code>current()</code> returns <code>FALSE</code> if the parameter array is empty.</p> <h3 id="summary-proposed-resolution">Proposed resolution</h3> <p>Check if <code>current()</code> returns FALSE (which it does for an empty menu tree).</p> <div class="codeblock"> <pre><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br></span><span style="color: #007700">function </span><span style="color: #0000BB">menu_tree_add_active_path</span><span style="color: #007700">(array &amp;</span><span style="color: #0000BB">$tree</span><span style="color: #007700">) {<br>&nbsp; </span><span style="color: #FF8000">// Grab any menu item to find the menu_name for this tree.<br>&nbsp; </span><span style="color: #0000BB">$menu_item </span><span style="color: #007700">= </span><span style="color: #0000BB">current</span><span style="color: #007700">(</span><span style="color: #0000BB">$tree</span><span style="color: #007700">);<br>&nbsp; if (</span><span style="color: #0000BB">$menu_item </span><span style="color: #007700">=== </span><span style="color: #0000BB">FALSE</span><span style="color: #007700">) {<br>&nbsp;&nbsp;&nbsp; return;<br>&nbsp; }<br><br>&nbsp; </span><span style="color: #0000BB">$tree_with_trail </span><span style="color: #007700">= </span><span style="color: #0000BB">menu_tree_page_data</span><span style="color: #007700">(</span><span style="color: #0000BB">$menu_item</span><span style="color: #007700">[</span><span style="color: #DD0000">'link'</span><span style="color: #007700">][</span><span style="color: #DD0000">'menu_name'</span><span style="color: #007700">]);<br></span><span style="color: #0000BB">?&gt;</span></span></pre></div>