There will be no current element (NULL) if you don't rewind first.
SimpleXMLIterator::rewind
(PHP 5, PHP 7, PHP 8)
SimpleXMLIterator::rewind — Rewind to the first element
说明
public SimpleXMLIterator::rewind(): void
This method rewinds the SimpleXMLIterator to the first element.
参数
此函数没有参数。
返回值
没有返回值。
范例
示例 #1 Rewind to the first element
<?php
$xmlIterator = new SimpleXMLIterator('<books><book>PHP Basics</book><book>XML Basics</book></books>');
$xmlIterator->rewind();
var_dump($xmlIterator->current());
?>
以上例程会输出：
object(SimpleXMLIterator)#2 (1) {
[0]=>
string(10) "PHP Basics"
}
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