DOMElement::insertAdjacentElement

(PHP 8 >= 8.3.0)

DOMElement::insertAdjacentElement — Insert adjacent element

说明

public DOMElement::insertAdjacentElement(string $where, DOMElement $element): ?DOMElement

Inserts an element at a relative position given by where.

参数

where

  • beforebegin - Insert before the target element.
  • afterbegin - Insert as the first child of the target element.
  • beforeend - Insert as the last child of the target element.
  • afterend - Insert after the target element.

element

The element to insert.

返回值

Return DOMElement or null on failure.

示例

示例 #1 DOMElement::insertAdjacentElement() example

<?php

$dom = new DOMDocument();
$dom->loadXML('<?xml version="1.0"?><container><p>foo</p></container>');
$container = $dom->documentElement;
$p = $container->firstElementChild;

$p->insertAdjacentElement('beforebegin', $dom->createElement('A'));
echo $dom->saveXML();
?>

以上示例会输出：

<?xml version="1.0"?>
<container><A/><p>foo</p></container>

参见