echo中的PHP basename不添加活动类

这是我在下面一个php文件中的引导导航栏。我想做的是在导航栏中添加活动类。我通过以下代码实现了这一点：

<li <?php if (basename($_SERVER['PHP_SELF']) == 'index.php')  
`echo 'class="active"' ?>><a href="index.php">Home </a></li>

>


';
}否则{
回音“
”；
}
?>

代码也可以在下面找到。但是，我不能使用：

      <li <?php if (basename($_SERVER['PHP_SELF']) == 'logout.php') echo 
      'class="active"' ?>><a href="logout.php">Logout</a></li>

。

我得到一个错误：

分析错误：语法错误，意外的“PHP_SELF”（T_字符串），应为 “，”或“；”在第35行的C:\xampp\htdocs\together\includes\nav.php中

第35行是有问题的代码：

<li <?php if (basename($_SERVER['PHP_SELF']) == 'index.php') echo 
'class="active"' ?>><a href="index.php">Home </a></li>

>


';
}否则{
回音“
”；
}
?>

更改：

if(logged_in()){

  echo 
  '
  <!--<li ><a href="admin.php">admin</a></li>-->
  <li <?php if (basename($_SERVER['PHP_SELF']) == 'logout.php') echo 'class="active"' ?>><a href="logout.php">Logout</a></li>
  <li><a href="admin.php">Games </a></li>
  <li><a href="#">Contact</a></li>
  ';

}else{

if（已登录（））{
回音
'
在恩斯塔吉的宝贵建议下，我以一种看似荒谬的方式实现了我想要的，但效果很好

<nav class="navbar navbar-inverse navbar-fixed-top">
<div class="container-fluid">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header">
  <button type="button" class="navbar-toggle collapsed" data-
toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-
expanded="false">
    <span class="sr-only">Toggle navigation</span>
    <span class="icon-bar"></span>
    <span class="icon-bar"></span>
    <span class="icon-bar"></span>
  </button>
  <a class="navbar-brand" href="index.php">Pluto</a>
</div>

<!-- Collect the nav links, forms, and other content for toggling -->
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
  <ul class="nav navbar-nav">
    <li <?php if (basename($_SERVER['PHP_SELF']) == 'index.php') echo 
'class="active"' ?>><a href="index.php">Home </a></li>


    <!--<li><a href="#">About</a></li>-->
    <!--<li><a href="register.php">Login</a></li>-->
    <?php 
    if(logged_in()){
    ?>
  <!--<li ><a href="admin.php">admin</a></li>-->

  <li <?php if (basename($_SERVER['PHP_SELF']) == 'logout.php') echo 
  'class="active"' ?>><a href="logout.php">Logout</a></li>
  <li <?php if (basename($_SERVER['PHP_SELF']) == 'admin.php') echo 
  'class="active"' ?>><a href="admin.php">Games </a></li>
  <li><a href="#">Contact</a></li>
  <?php
  }else{
    ?>
    <li <?php if (basename($_SERVER['PHP_SELF']) == 'register.php') echo 
      'class="active"' ?>><a href="register.php">Login</a></li>
  <?php
  }
  ?>

  </ul>

  <ul class="nav navbar-nav navbar-left">

  </ul>
</div><!-- /.navbar-collapse -->
 </div><!-- /.container-fluid -->
</nav>


切换导航

>




感谢您的回答，您肯定已经找到了错误的原因，即未转义字符。我尝试了您的解决方案以及以下方法：

<nav class="navbar navbar-inverse navbar-fixed-top">
<div class="container-fluid">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header">
 <button type="button" class="navbar-toggle collapsed" data-
 toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-
 expanded="false">
    <span class="sr-only">Toggle navigation</span>
    <span class="icon-bar"></span>
    <span class="icon-bar"></span>
    <span class="icon-bar"></span>
  </button>
  <a class="navbar-brand" href="index.php">Plutolingo</a>
</div>

<!-- Collect the nav links, forms, and other content for toggling -->
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
  <ul class="nav navbar-nav">
    <li <?php if (basename($_SERVER['PHP_SELF']) == 'index.php') echo 
 'class="active"' ?>><a href="index.php">Home </a></li>
    <!--<li><a href="#">About</a></li>-->
    <!--<li><a href="register.php">Login</a></li>-->

  </ul>

  <ul class="nav navbar-nav navbar-left">


    <?php 

    if(logged_in()){

      echo 
      '
      <!--<li ><a href="admin.php">admin</a></li>-->
      <li <?php if (basename($_SERVER['PHP_SELF']) == 'logout.php') echo 
      'class="active"' ?>><a href="logout.php">Logout</a></li>
      <li><a href="admin.php">Games </a></li>
      <li><a href="#">Contact</a></li>
      ';

    }else{
      echo '<li><a href="register.php">Login</a></li>';
    }


    ?>
  </ul>
 </div><!-- /.navbar-collapse -->

if(logged_in()){

  echo 
  '
  <!--<li ><a href="admin.php">admin</a></li>-->
  <li <?php if (basename($_SERVER['PHP_SELF']) == 'logout.php') echo 'class="active"' ?>><a href="logout.php">Logout</a></li>
  <li><a href="admin.php">Games </a></li>
  <li><a href="#">Contact</a></li>
  ';

}else{

if(logged_in()) { ?>
      <!--<li ><a href="admin.php">admin</a></li>-->
      <li <?php if (basename($_SERVER['PHP_SELF']) == 'logout.php') echo 
      'class="active"' ?>><a href="logout.php">Logout</a></li>
      <li><a href="admin.php">Games </a></li>
      <li><a href="#">Contact</a></li>
<?php }else{

<nav class="navbar navbar-inverse navbar-fixed-top">
<div class="container-fluid">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header">
  <button type="button" class="navbar-toggle collapsed" data-
toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-
expanded="false">
    <span class="sr-only">Toggle navigation</span>
    <span class="icon-bar"></span>
    <span class="icon-bar"></span>
    <span class="icon-bar"></span>
  </button>
  <a class="navbar-brand" href="index.php">Pluto</a>
</div>

<!-- Collect the nav links, forms, and other content for toggling -->
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
  <ul class="nav navbar-nav">
    <li <?php if (basename($_SERVER['PHP_SELF']) == 'index.php') echo 
'class="active"' ?>><a href="index.php">Home </a></li>


    <!--<li><a href="#">About</a></li>-->
    <!--<li><a href="register.php">Login</a></li>-->
    <?php 
    if(logged_in()){
    ?>
  <!--<li ><a href="admin.php">admin</a></li>-->

  <li <?php if (basename($_SERVER['PHP_SELF']) == 'logout.php') echo 
  'class="active"' ?>><a href="logout.php">Logout</a></li>
  <li <?php if (basename($_SERVER['PHP_SELF']) == 'admin.php') echo 
  'class="active"' ?>><a href="admin.php">Games </a></li>
  <li><a href="#">Contact</a></li>
  <?php
  }else{
    ?>
    <li <?php if (basename($_SERVER['PHP_SELF']) == 'register.php') echo 
      'class="active"' ?>><a href="register.php">Login</a></li>
  <?php
  }
  ?>

  </ul>

  <ul class="nav navbar-nav navbar-left">

  </ul>
</div><!-- /.navbar-collapse -->
 </div><!-- /.container-fluid -->
</nav>