解析来自 stackoverflow.com 的 rss 时出错。在 PHP 中使用 SimpleXML

Question

我试图从 http://whosebug.com 解析标签 PHP 的 rss，并尝试使用 DOM 模型以外的东西，所以我研究了 SimpleXML。这是我的代码：

<?php
    error_reporting(-1);
    $xml = file_get_contents('https://whosebug.com/feeds/tag/php');
    $loaded = simplexml_load_string($xml) or die("There is a problem");
    $str1 = $loaded["entry"]["entry"][0]->title;
    echo $str1;
?>

但是屏幕上什么也没有显示，也没有报错！来自 https://whosebug.com/feeds/tag/php 的示例数据可以在以下位置找到 http://gourabt2.cloudapp.net/sample-data/sample_data.xml

非常感谢任何帮助！谢谢！干杯！

Answer 1

试试这个。

<?php
    $xml = file_get_contents('http://whosebug.com/feeds/tag/php');
    $loaded = simplexml_load_string($xml) or die("There is a problem");
    foreach($loaded->entry as $post) {
       echo $post->title . "\n";
    }

输出：

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Answer 2

那是你走错了路。这是更正。

(string)$loaded->entry->title;

Answer 3

您在 SimpleXML 中使用数组访问来访问属性所以：

$loaded["entry"]

returns 文档元素中名为 "entry" 的属性。

使用箭头访问获取名为 "entry" 的元素：

$loaded->entry

此 returns 名为 "entry" 的元素。

另外还要注意命名空间。使用 SimpleXML 解析提要已在现有问答 material 中概述，请与它相关。

解析来自 stackoverflow.com 的 rss 时出错。在 PHP 中使用 SimpleXML

There is a error in parsing the rss from stackoverflow.com. using SimpleXML in PHP

php

xml

rss