array ( 0 => 'index.php', 1 => 'PHP Manual', ), 'head' => array ( 0 => 'UTF-8', 1 => 'zh', ), 'this' => array ( 0 => 'simplexmlelement.rewind.php', 1 => 'SimpleXMLElement::rewind', 2 => 'Rewind to the first element', ), 'up' => array ( 0 => 'class.simplexmlelement.php', 1 => 'SimpleXMLElement', ), 'prev' => array ( 0 => 'simplexmlelement.registerxpathnamespace.php', 1 => 'SimpleXMLElement::registerXPathNamespace', ), 'next' => array ( 0 => 'simplexmlelement.savexml.php', 1 => 'SimpleXMLElement::saveXML', ), 'alternatives' => array ( ), 'source' => array ( 'lang' => 'en', 'path' => 'reference/simplexml/simplexmlelement/rewind.xml', ), 'history' => array ( ), ); $setup["toc"] = $TOC; $setup["toc_deprecated"] = $TOC_DEPRECATED; $setup["parents"] = $PARENTS; manual_setup($setup); contributors($setup); ?>

SimpleXMLElement::rewind

(PHP 8)

SimpleXMLElement::rewind — Rewind to the first element

说明

public SimpleXMLElement::rewind(): void

警告

Prior to PHP 8.0, SimpleXMLElement::rewind() was only declared on the subclass SimpleXMLIterator.

This method rewinds the SimpleXMLElement to the first element.

参数

此函数没有参数。

返回值

没有返回值。

示例

示例 #1 Rewind to the first element

<?php
$xmlElement = new SimpleXMLElement('<books><book>PHP Basics</book><book>XML Basics</book></books>');
$xmlElement->rewind();

var_dump($xmlElement->current());
?>

以上示例会输出：

object(SimpleXMLElement)#2 (1) {
  [0]=>
  string(10) "PHP Basics"
}