包含PHP标签后导航栏没有折叠

Question

I just include this php tags just to check,that if the user is logged in or not.The modal is located in other page(login.php) . It was working fine without including the php tags."The whole thing is working fine except the navbar is not collapsing".Rate +ve if the question is not irrelevant.

          <div class="navbar-header">
          <button class="navbar-toggle" data-toggle="collapse" data-target=".collmenu"> 
             <span class="icon-bar img-reponsive"></span>
             <span class="icon-bar img-reponsive"></span>
             <span class="icon-bar img-reponsive"></span>
         </button>
      </div>
      <div class="collapse navbar-collapse collmenu">

            <ul class="nav navbar-nav navbar-right">
         <?php
         if(!empty($loggedin)&&($loggedin=='true')){ echo'<li><a href="">logout</a></li>
               <li><a href="#">hello</a></li>';}

            else{echo'<li><a href="" data-toggle="modal" data-target="#loginmodal">Login</a></li>
                 <li><a href="pages/register.php">Signup</a></li>';}

        ?>  
            </ul>

  </div>

Answer 1

Please check for the files that you've included. Or is there any form exists in your this page linked to the navbar? check that you should not have included files twice, also check for the form action if any.