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SimpleXMLElement::addChild

(PHP 5 >= 5.1.3, PHP 7, PHP 8)

SimpleXMLElement::addChild — Adds a child element to the XML node

说明

public SimpleXMLElement::addChild(string $qualifiedName, ?string $value = null, ?string $namespace = null): ?SimpleXMLElement

Adds a child element to the node and returns a SimpleXMLElement of the child.

参数

qualifiedName

The name of the child element to add.

value

If specified, the value of the child element.

Special characters < and > get escaped automatically, & must be escaped manually.

namespace

If specified, the namespace to which the child element belongs.

返回值

The addChild method returns a SimpleXMLElement object representing the child added to the XML node on success; null on failure.

示例

注意:

Listed examples may include examples/simplexml-data.php, which refers to the XML string found in the first example of the basic usage guide.

示例 #1 Add attributes and children to a SimpleXML element

<?php

include 'examples/simplexml-data.php';

$sxe = new SimpleXMLElement($xmlstr);
$sxe->addAttribute('type', 'documentary');

$movie = $sxe->addChild('movie');
$movie->addChild('title', 'PHP2: More Parser Stories');
$movie->addChild('plot', 'This is all about the people who make it work.');

$characters = $movie->addChild('characters');
$character = $characters->addChild('character');
$character->addChild('name', 'Mr. Parser');
$character->addChild('actor', 'John Doe');

$rating = $movie->addChild('rating', '5');
$rating->addAttribute('type', 'stars');

echo $sxe->asXML();

?>

以上示例的输出类似于：

<?xml version="1.0" standalone="yes"?>
<movies type="documentary">
 <movie>
  <title>PHP: Behind the Parser</title>
  <characters>
   <character>
    <name>Ms. Coder</name>
    <actor>Onlivia Actora</actor>
   </character>
   <character>
    <name>Mr. Coder</name>
    <actor>El Act&#xD3;r</actor>
   </character>
  </characters>
  <plot>
   So, this language. It's like, a programming language. Or is it a
   scripting language? All is revealed in this thrilling horror spoof
   of a documentary.
  </plot>
  <great-lines>
   <line>PHP solves all my web problems</line>
  </great-lines>
  <rating type="thumbs">7</rating>
  <rating type="stars">5</rating>
 </movie>
 <movie>
  <title>PHP2: More Parser Stories</title>
  <plot>This is all about the people who make it work.</plot>
  <characters>
   <character>
    <name>Mr. Parser</name>
    <actor>John Doe</actor>
   </character>
  </characters>
  <rating type="stars">5</rating>
 </movie>
</movies>

参见