Php 如果是类内属性html

导航

    <li>
      <a href="<?=base_url();?>backend/Administrator"
        class="<?php ($_SERVER['REQUEST_URI']) ? 'class="waves-effect active"' : 'class="waves-effect"'; ?>"><i class="zmdi zmdi-view-dashboard"></i> <span> Home </span> </a>
    </li>

    <li>
      <a href="<?=base_url();?>backend/Item" class="waves-effect"><i class="zmdi zmdi-view-list-alt"></i> <span> Item Management </span> </a>
    </li>

    <li>
      <a href="<?=base_url();?>backend/Item/tag" class="waves-effect"><i class="zmdi zmdi-collection-plus"></i> <span> Category Management </span> </a>
    </li>

    <li>
      <a href="<?=base_url();?>backend/User" class="waves-effect"><i class="zmdi zmdi-account-o"></i> <span> User Management </span> </a>
    </li>

    <li>
      <a href="<?=base_url();?>backend/Transaksi" class="waves-effect"><i class="fa fa-exchange"></i> <span> Transactions </span> </a>
    </li>

    <li>
      <a href="<?=base_url();?>backend/Transaksi/report" class="waves-effect"><i class="zmdi zmdi-comment-more"></i> <span> Report </span> </a>
    </li>
  </ul>

我在课堂上使用if，但它不起作用。
如果URL处于活动状态，则使用类

waves effect active

。如果未激活，则使用类

波浪效果

---

请帮助我解决任何问题。

您需要

回显

值并删除

类=

部分，如果您不想重复该部分，则需要执行该操作

<li>
  <a href="<?=base_url();?>backend/Administrator"
    class="<?php ($_SERVER['REQUEST_URI']) ? echo 'waves-effect active' : echo 'waves-effect'; ?>"><i class="zmdi zmdi-view-dashboard"></i> <span> Home </span> </a>
</li>

因为class属性重复，并且缺少一些回显

替换：

class="<?php ($_SERVER['REQUEST_URI']) ? 'class="waves-effect active"' : 'class="waves-effect"'; ?>"

class=“”

与：

class=“”

或：

---

您拥有的$\u服务器['REQUEST\u URI']可能永远存在，因此您的测试总是会得出您的值的真实值

你想要更像这样的东西吗

<li>
    <a href="<?= base_url(); ?>backend/Administrator"
       class="<?= ($_SERVER['REQUEST_URI'] != '/home/') ? 'waves-effect active' : 'waves-effect'; ?>">
       <i class="zmdi zmdi-view-dashboard"></i> <span> Home </span>
    </a>
</li>

您只需使用
回显“字符串”即可。您可以使用CodeIgniter URI类和URL帮助器使事情更清晰、更简单：

<?php

$this->load->helper('url');

$links = [
   [
        'uriStr' => 'backend/administrator',
        'text'   => 'Home',
        'icon'   => 'zmdi zmdi-view-dashboard', 
   ],
   [
        'uriStr' => 'backend/item',
        'text'   => 'Item Management',
        'icon'   => 'zmdi zmdi-view-list-al', 
   ],
   [
        'uriStr' => 'backend/item/tag',
        'text'   => 'Category Management',
        'icon'   => 'zmdi zmdi-collection-plus', 
   ],
   [
        'uriStr' => 'backend/user',
        'text'   => 'User Management',
        'icon'   => 'zmdi zmdi-account-o', 
   ],
   [
        'uriStr' => 'backend/transaksi',
        'text'   => 'Transactions',
        'icon'   => 'fa fa-exchange', 
   ],
   [
        'uriStr' => 'backend/transaksi/report',
        'text'   => 'Report',
        'icon'   => 'zmdi zmdi-comment-more', 
   ],
];

foreach( $links as $link )
{
    $icon = '<i class="' . $link['icon'] . '"></i>';

    $class = $this->uri->uri_string() == $link['uriStr']
        ? 'waves-effect active'
        : 'waves-effect';

    echo '<li>' . 
        anchor( $link['uriStr'], $icon . ' <span> ' . $link['text'] . ' </span> ', 'class="' . $class . '"' ) . 
    '</li>' . 
    PHP_EOL;
}

将
echo
放在输出之前
<li>
    <a href="<?= base_url(); ?>backend/Administrator"
       class="<?= ($_SERVER['REQUEST_URI'] != '/home/') ? 'waves-effect active' : 'waves-effect'; ?>">
       <i class="zmdi zmdi-view-dashboard"></i> <span> Home </span>
    </a>
</li>

$_SERVER['REQUEST_URI'] != '/home/'

<?= ($_SERVER['REQUEST_URI'] != '/home/') ? 'waves-effect active' : 'waves-effect'; ?>

trim($_SERVER['REQUEST_URI'],'/') =='home'

class="waves-effect<?= (trim($_SERVER['REQUEST_URI'],'/') =='home') ? ' active' : ''; ?>">

class="waves-effect <?= (trim($_SERVER['REQUEST_URI'],'/') =='home') ? 'active' : ''; ?>">

<?php

$this->load->helper('url');

$links = [
   [
        'uriStr' => 'backend/administrator',
        'text'   => 'Home',
        'icon'   => 'zmdi zmdi-view-dashboard', 
   ],
   [
        'uriStr' => 'backend/item',
        'text'   => 'Item Management',
        'icon'   => 'zmdi zmdi-view-list-al', 
   ],
   [
        'uriStr' => 'backend/item/tag',
        'text'   => 'Category Management',
        'icon'   => 'zmdi zmdi-collection-plus', 
   ],
   [
        'uriStr' => 'backend/user',
        'text'   => 'User Management',
        'icon'   => 'zmdi zmdi-account-o', 
   ],
   [
        'uriStr' => 'backend/transaksi',
        'text'   => 'Transactions',
        'icon'   => 'fa fa-exchange', 
   ],
   [
        'uriStr' => 'backend/transaksi/report',
        'text'   => 'Report',
        'icon'   => 'zmdi zmdi-comment-more', 
   ],
];

foreach( $links as $link )
{
    $icon = '<i class="' . $link['icon'] . '"></i>';

    $class = $this->uri->uri_string() == $link['uriStr']
        ? 'waves-effect active'
        : 'waves-effect';

    echo '<li>' . 
        anchor( $link['uriStr'], $icon . ' <span> ' . $link['text'] . ' </span> ', 'class="' . $class . '"' ) . 
    '</li>' . 
    PHP_EOL;
}