在simpleXMLElement的foreach循环中获取子索引 [英] get the sub index in foreach loop in simpleXMLElement
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问题描述
<?xml version="1.0" encoding="utf-8"?>
<items>
<item>
<title>This is title1</title>
<desc>This is desc1</desc>
<image></image>
<tudou></tudou>
</item>
<item>
<title>This is title2</title>
<desc>This is desc2</desc>
<tudou>55362137</tudou>
</item>
<item>
<title>This is title3</title>
<desc>This is desc4</desc>
</item>
</items>
这里是我的php代码：
here's my php code:
<div class="nav">
<ul>
<?php
$xml = simplexml_load_file('post.xml');
//print_r($xml);
foreach($xml->item as $key=>$item )
{
echo <<<HTML
<li>
<div class="published">
<span class="day">13</span>
Sep 2010
</div>
<div class="summary">
<a href="#slide-$key">
<h3>$item->title</h3>
</a>
</div>
</li>
HTML;
}
?>
</ul>
</div>
在php呈现页面之后，< a href =＃slide - $ key> return < a href =＃slide-item> 。
我想要$ key获得其中的数目，
所以如何获得？
after php render the page,the <a href="#slide-$key"> return <a href=#slide-item>.
I want $key get the number of which ,
so how to get ?
推荐答案
因为simpleXML结构不是正常的数组，而是没有数组索引的迭代器。
This is because simpleXML structures are not normal arrays but iterators who do not have an array index.
我不知道使用变量手动跟踪任何其他解决方案： / p>
I don't know of any other solution than keeping track manually using a variable:
$index = 0;
$xml = simplexml_load_file('post.xml');
foreach($xml->item as $item )
{
....
$index++;
}
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