对导航栏使用PHP_include不适用于嵌套文件夹

Question

I am currently using WAMP/localhost for development of my site. I did not want to keep having to change my navbar on all of my pages so I moved the navbar into its own file and am using include('navbar.php'). It currently works except for when I have nested folders for example,

WAMP (folder)
--www (folder)
----index.php
----navbar.php
----lab (folder)
------lab1 (folder)
--------q1.php
--------q2.php

When I view question 1, q1, and try to go back to home, index.php, it works. When I try to view q2 from q1 it does not work. Instead it displays, /labs/1/labs/1/2.php. Here is my navbar code that is included on all pages,

<div class="col-md-2 hidden-sm hidden-xs" id="sidebar" role="navigation">
  <div class="well sidebar-nav">
    <ul class="nav">
      <li><a href="/index.php">Home</a></li>
      <li class="dropdown">
                <a href="#" class="dropdown-toggle" data-toggle="dropdown">Lab 1<b class="caret"></b></a>
                <ul class="dropdown-menu" id="sidebar-dropdown">
                  <li><a href="./labs/1/1.php">Question One</a></li>
                  <li><a href="./labs/1/2.php">Question Two</a></li>
                  <li><a href="./labs/1/4.php">Question Four</a></li>
                  <li><a href="#">sub item</a></li>
                </ul>
      <!--<li><a href="#">Item</a></li>
      <li><a href="#">Item</a></li>
      <li><a href="#">Item</a></li>
      <li><a href="#">Item</a></li>
      <li><a href="#">Item</a></li>-->
    </ul>
  </div><!--/.well -->
</div><!--/span-->

How can I have it work so that when I click on a page within a folder it will load the correct file?

Answer 1

you need to give the complete address at the href

you can have define a variable at top of navbar

$base = 'http://localhost/myproject'; //as per as your site

and the change the href of the tag

<li><a href="<?php echo $base; ?>/labs/1/1.php">Question One</a></li>
<li><a href="<?php echo $base; ?>/labs/1/2.php">Question Two</a></li>
<li><a href="<?php echo $base; ?>/labs/1/4.php">Question Four</a></li>

the above will output complete url in href

in your case . indicate the current directory and when you click on Question two it append labs/1/2.php to the current url