php - 如何将自定义 HTML 类名称添加到管理屏幕子菜单项？

Question

这是帖子菜单下的这些子菜单项

我检查了代码，发现它的标记是这样的

<ul class="wp-submenu wp-submenu-wrap">
  <li class="wp-submenu-head" aria-hidden="true">Posts</li>
  <li class="wp-first-item current"><a href="edit.php" class="wp-first-item current">All Posts</a></li>
  <li><a href="post-new.php">Add New</a></li>
  <li><a href="edit-tags.php?taxonomy=category">Categories</a></li>
  <li><a href="edit-tags.php?taxonomy=post_tag">Tags</a></li>
</ul>

我想做的是添加一个自定义类 my-custom-class在 <li> 上标签(在服务器端处理)，这样它就会变成这样

<ul class="wp-submenu wp-submenu-wrap">
  <li class="wp-submenu-head" aria-hidden="true">Posts</li>
  <li class="wp-first-item current my-custom-class"><a href="edit.php" class="wp-first-item current">All Posts</a></li>
  <li class="my-custom-class"><a href="post-new.php">Add New</a></li>
  <li class="my-custom-class"><a href="edit-tags.php?taxonomy=category">Categories</a></li>
  <li class="my-custom-class"><a href="edit-tags.php?taxonomy=post_tag">Tags</a></li>
</ul>

有没有办法将自定义 HTML 类名添加到管理屏幕子菜单项？

Answer 1

您可以在页面加载之前对 html 执行 str_replace:

只需要计算出选择器或者用 DOMDocument 解析它

function callback($buffer) {

    $buffer = str_replace('wp-first-item', 'wp-first-item my-custom-class', $buffer);

    return $buffer;
}

function buffer_start() { ob_start("callback"); }

function buffer_end() { ob_end_flush(); }

add_action('admin_head', 'buffer_start');
add_action('admin_footer', 'buffer_end');