php 加入收藏

<button onclick="window.sidebar.addPanel(document.title, window.location.href, '')">
    加入收藏
</button>

<?php
if (isset($_POST['add_to_favorites'])) {
    $title = $_POST['title'];
    $url = $_POST['url'];
    echo "<script>window.sidebar.addPanel('$title', '$url', '')</script>";
}
?>
<form method="post">
    <input type="hidden" name="title" value="<?php echo htmlspecialchars($_SERVER['HTTP_TITLE']); ?>">
    <input type="hidden" name="url" value="<?php echo htmlspecialchars($_SERVER['REQUEST_URI']); ?>">
    <button type="submit" name="add_to_favorites">加入收藏</button>
</form>

<a href="#" onclick="window.sidebar.addPanel(document.title, window.location.href, ''); return false;">加入收藏</a>