XML Feeds &PHP - 限制项目数量 [英] XML Feeds & PHP - Limit the number of items

问题描述

我正在浏览 BBC 新闻 XML 提要.但我想要做的是将其限制为提要的 8 或 10 项.

I am pulling through the BBC News XML Feed. But what I want to do is limit it to say 8 or 10 items of the feed.

我怎样才能做到这一点?

How can I achieve this?

我的代码是:

<?php

  $doc = new DOMDocument();
  $doc->load('http://feeds.bbci.co.uk/news/rss.xml');
  $arrFeeds = array();
  foreach ($doc->getElementsByTagName('item') as $node) {
    $itemRSS = array ( 
      'title' => $node->getElementsByTagName('title')->item(0)->nodeValue,
      'desc' => $node->getElementsByTagName('description')->item(0)->nodeValue,
      'link' => $node->getElementsByTagName('link')->item(0)->nodeValue,
      'date' => $node->getElementsByTagName('pubDate')->item(0)->nodeValue
      );
?>

<h2><a href="<?php echo $itemRSS['link'] ;?>"><?php echo $itemRSS['title']; ?></a></h2>
<?php  } ?>

提前致谢..

推荐答案

取一个计数器变量，每次迭代加一，检查计数器是否达到上限，然后退出循环.

Take a counter variable, increment by one with each iteration and check if the counter is reached at the upper limit and then exit from loop.

$cnt=0;
foreach ($doc->getElementsByTagName('item') as $node) {
    if($cnt == 8 ) {
       break;
     }    
    $itemRSS = array ( 
      'title' => $node->getElementsByTagName('title')->item(0)->nodeValue,
      'desc' => $node->getElementsByTagName('description')->item(0)->nodeValue,
      'link' => $node->getElementsByTagName('link')->item(0)->nodeValue,
      'date' => $node->getElementsByTagName('pubDate')->item(0)->nodeValue
      );
      $cnt++;
?>    
<h2><a href="<?php echo $itemRSS['link'] ;?>"><?php echo $itemRSS['title']; ?></a></h2>
<?php 
} ?>

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