(PHP 5, PHP 7, PHP 8)
DOMNodeList::item — Retrieves a node specified by index
Retrieves a node specified by index within the
DOMNodeList object.
If you need to know the number of nodes in the collection, use
the length property of the
DOMNodeList object.
indexIndex of the node into the collection.
The node at the indexth position in the
DOMNodeList, or null if that is not a valid
index.
示例 #1 Traversing all the entries of the table
<?php
$doc = new DOMDocument;
$doc->load('book.xml');
$items = $doc->getElementsByTagName('entry');
for ($i = 0; $i < $items->length; $i++) {
echo $items->item($i)->nodeValue . "\n";
}
?>示例 #2 Accessing item with array syntax
<?php
for ($i = 0; $i < $items->length; $i++) {
echo $items[$i]->nodeValue . "\n";
}
?>示例 #3 Traversing items with foreach
<?php
foreach ($items as $item) {
echo $item->nodeValue . "\n";
}
?>以上示例会输出：
Title Author Language ISBN The Grapes of Wrath John Steinbeck en 0140186409 The Pearl John Steinbeck en 014017737X Samarcande Amine Maalouf fr 2253051209