使用php显示当前页面的活动导航

Question

我正在尝试使用use $current_url = basename($_SERVER['PHP_SELF']);来确定我所在的页面，考虑到我的导航（html）存储在php文件中并包含在每个页面中。这是我用来确定哪个导航选项应该处于活动状态的代码：

<link rel="stylesheet" href="css/style.css">
<link rel="stylesheet" href="css/no-background.css">

<ul>
<?php
    $current_url = basename($_SERVER['PHP_SELF']);
    $active = "class=\"active\"";
?>
<?php if ($current_url == "globaluser.php") { ?>
    <li <?php echo $active;?> > <?php } ?> <a href="globaluser.php?Agent=<?php echo $Agent;?>">Overview</a></li>
<?php if ($current_url == "search.php") { ?>
    <li <?php echo $active;?> > <?php } ?> <a href="search.php?Agent=<?php echo $Agent?>">Add new client</a></li>
<?php if ($current_url == "viewadmins.php") { ?>
    <li <?php echo $active;?> > <?php } ?> <a href="viewadmins.php?Agent=<?php echo $Agent?>">View admins</a></li>
    <li class="border-right"><a href="emails.php?Agent=<?php echo $Agent?>">E-mails</a></li>
    <li class="right border-right"><a href="logout.php"><?php echo $Agent?></a>
        <ul class="drop1">
            <li><a href="earnings.php?Agent=<?php echo $Agent?>">Earnings</a></li>
            <li id="hover-trigger"><a href="#">Change Password</a>
                <ul class="drop2">
                    <li>
                        <form action="changepass.php?Agent=<?php echo $Agent?>" method="POST">
                            <input type="password" name="1" placeholder="Enter new password">
                            <input type="password" name="2" placeholder="Repeat new password">
                    </li>
                    <li>
                            <input type="submit" name="changepw" class="button" value="Change">
                        </form>
                    </li>
                </ul>
            </li>
        <li>
            <form action="logout.php">
                <input type="submit" class="button" value="Log out">
            </form>
        </li>
        </ul>
    </li>

但它不起作用。它将活动页面显示为活动页面，但是，它显示2页作为简单的超链接。这就是它的样子：

有没有人知道为什么会这样？它适用于2，但是2，完全相同的代码失败？ 感谢

Answer 1

你应该这样做：

<li <?php echo ($current_url == "globaluser.php") ? $active : ''?> ><a href="globaluser.php?Agent=<?php echo $Agent;?>">Overview</a></li>

因为您现在正在调整开场<li>标记

的存在

Answer 2

您在错误的地方使用<?php } ?> 它应该是在  <a href="search.php?Agent=<?php echo $Agent?>">Add new client</a></li>

更新后的代码如下：

   <link rel="stylesheet" href="css/style.css">
<link rel="stylesheet" href="css/no-background.css">

<ul>
<?php
    $current_url = basename($_SERVER['PHP_SELF']);
    echo $current_url;
    $active = "class=\"active\"";
?>
<?php if ($current_url == "globaluser.php") { ?>
    <li <?php echo $active;?> > <?php } ?> <a href="globaluser.php?Agent=<?php echo $Agent;?>">Overview</a></li>
<?php if ($current_url == "search.php") { ?>
    <li <?php echo $active;?> > <a href="search.php?Agent=<?php echo $Agent?>">Add new client</a></li> <?php } ?> 
<?php if ($current_url == "viewadmins.php") { ?>
    <li <?php echo $active;?> >  <a href="viewadmins.php?Agent=<?php echo $Agent?>">View admins</a></li><?php } ?>
    <li class="border-right"><a href="emails.php?Agent=<?php echo $Agent?>">E-mails</a></li>
    <li class="right border-right"><a href="logout.php"><?php echo $Agent?></a>
        <ul class="drop1">

            <li><a href="earnings.php?Agent=<?php echo $Agent?>">Earnings</a></li>

            <li id="hover-trigger"><a href="#">Change Password</a>

                <ul class="drop2">
                    <li>
                        <form action="changepass.php?Agent=<?php echo $Agent?>" method="POST">
                            <input type="password" name="1" placeholder="Enter new password">
                            <input type="password" name="2" placeholder="Repeat new password">
                    </li>
                    <li>

                            <input type="submit" name="changepw" class="button" value="Change">
                        </form>
                    </li>
                </ul>
            </li>
            <li>
                <form action="logout.php">
                <input type="submit" class="button" value="Log out">
                </form>
            </li>
        </ul>
    </li>

Answer 3

您还可以使用preg_replace（）添加class="active"

ob_start();
echo '<ul>
  <li><a href="page1.php">Page 1</a></li>
  <li><a href="page2.php">Page 2</a></li>
  </ul>';
$output = ob_get_clean();
$pattern = '~<li><a href="'.$url.'">~';
$replacement = '<li class="active"><a href="'.$url.'">';
echo preg_replace($pattern, $replacement, $output);