PHP 手册
后退前进


DOMNodelist->item()

(no version information, might be only in CVS)

DOMNodelist->item() --  Retrieves a node specified by index

说明

class DOMNodeList {

DOMNode item ( int index )

}

Retrieves a node specified by index within the DOMNodeList object.

提示: If you need to know the number of nodes in the collection, use the length property of the DOMNodeList object.

参数

index

Index of the node into the collection.

返回值

The node at the indexth position in the DOMNodeList, or NULL if that is not a valid index.

范例

例子 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";
}

?>

Alternatively, you can use foreach, which is a much more convenient way:

<?php

foreach ($items as $item) {
    echo $item->nodeValue . "\n";
}

?>

上例将输出：

Title
Author
Language
ISBN
The Grapes of Wrath
John Steinbeck
en
0140186409
The Pearl
John Steinbeck
en
014017737X
Samarcande
Amine Maalouf
fr
2253051209



后退起点前进
DOMNode->replaceChild()上一级DOMProcessingInstruction->__construct()