Returns the previous sibling node of the current node

# tidyNode::getPreviousSibling

(PHP 8 >= 8.4.0)

tidyNode::getPreviousSibling — Returns the previous sibling node of the current node

### 说明

public function tidyNode::getPreviousSibling(): ?tidyNode

Returns the previous sibling node of the current node.

### 参数

此函数没有参数。

### 返回值

Returns a tidyNode if the node has a previous sibling, or `null` otherwise.

### 示例

示例 #1 tidyNode::getPreviousSibling() example

    <?php

    $html = <<< HTML
    <html>
     <head>
     </head>
     <body>
      <p>Hello</p><p>World</p>
     </body>
    </html>

    HTML;

    $tidy = tidy_parse_string($html);

    $node = $tidy->body();
    var_dump($node->child[1]->getPreviousSibling()->value);

    ?>

以上示例会输出：

    string(13) "<p>Hello</p>
    "

### 参见

- tidyNode::getParent() - Returns the parent node of the current node
- tidyNode::getNextSibling() - Returns the next sibling node of the current node

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