[英]Unable to extract title from feed in PHP?
I am trying to extract data from this feed . 我正在尝试从此提要中提取数据。 This is my code: 这是我的代码:
$xml = file_get_contents_curl($feed_url);
$rss = new DOMDocument();
$rss->load($xml);
The function file_get_contents_curl
get the data from webpage. 函数file_get_contents_curl
从网页获取数据。 On dumping it in a var like this: 在像这样将其转储到var中时:
var_dump($xml);
It echoes everything as expected ( i mean all the title, link etc. tags). 它回显了所有预期的内容(我的意思是所有标题,链接等标记)。 However, if I use var_dump
on $rss
: 但是,如果我在$rss
上使用var_dump
:
var_dump($rss);
I get this reponse: 我得到这个回应:
object(DOMDocument)#1 (34) { ["doctype"]=> NULL ["implementation"]=> string(22) "(object value omitted)" ["documentElement"]=> NULL ["actualEncoding"]=> NULL ["encoding"]=> NULL ["xmlEncoding"]=> NULL ["standalone"]=> bool(true) ["xmlStandalone"]=> bool(true) ["version"]=> string(3) "1.0"
["xmlVersion"]=> string(3) "1.0" ["strictErrorChecking"]=> bool(true) ["documentURI"]=> NULL ["config"]=> NULL ["formatOutput"]=> bool(false) ["validateOnParse"]=> bool(false) ["resolveExternals"]=> bool(false) ["preserveWhiteSpace"]=> bool(true)
["recover"]=> bool(false) ["substituteEntities"]=> bool(false) ["nodeName"]=> string(9) "#document" ["nodeValue"]=> NULL ["nodeType"]=> int(9) ["parentNode"]=> NULL ["childNodes"]=> string(22) "(object value omitted)" ["firstChild"]=> NULL
["lastChild"]=> NULL ["previousSibling"]=> NULL ["attributes"]=> NULL ["ownerDocument"]=> NULL ["namespaceURI"]=> NULL ["prefix"]=> string(0) "" ["localName"]=> NULL ["baseURI"]=> NULL ["textContent"]=> string(0) "" }
Now, I can't extract title or anything else from the feed. 现在,我无法从Feed中提取标题或其他内容。 My code is like this: 我的代码是这样的:
foreach ($rss->getElementsByTagName('item') as $node) {
$title = $node->getElementsByTagName('title')->item(0)->nodeValue;
The feed, however, has an error if you open it up in chrome error on line 273 at column 11: Encoding error
but it opens in Firefox. 但是,如果您error on line 273 at column 11: Encoding error
Chrome error on line 273 at column 11: Encoding error
打开了feed,则会出现错误error on line 273 at column 11: Encoding error
但是在Firefox中将其打开。 But I guess I should be able to parse the feed up to first point of error. 但是我想我应该能够解析提要到错误的第一点。
Here is a sample of the feed: 这是提要的示例:
<?xml version="1.0" encoding="UTF-8"?>
<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">
<channel>
<title>eBaum's World - Featured Media</title>
<link>http://www.ebaumsworld.com</link>
<atom:link href="http://www.ebaumsworld.com/rss/featured/" rel="self" type="application/rss+xml" />
<description>The latest featured media</description>
<language>en-us</language>
<copyright>eBaum's World (c) 1998-2015</copyright>
<lastBuildDate>Wed, 25 Nov 2015 03:31:12 -0500</lastBuildDate>
<pubDate>Wed, 25 Nov 2015 03:31:12 -0500</pubDate>
<item>
<title>24 People Being Complete A$$holes</title>
<link>http://www.ebaumsworld.com/pictures/view/84832600/</link>
<description>
<![CDATA[
<table cellspacing="0" cellpadding="2" width="100%" border="0">
<tr>
<td valign="top" width="120">
<a href="http://www.ebaumsworld.com/pictures/view/84832600/"><img width="320" height="220" src="http://cdn.ebaumsworld.com/thumbs/2015/11/24/070634/84832600/assholes.jpg" border="0" /></a>
</td>
<td valign="top">
People acting like such mega-jerks it might send you into a blind rage! </td>
</tr>
</table>
]]>
</description>
<pubDate>Tue, 24 Nov 2015 23:02:00 -0500</pubDate>
<enclosure type="image/jpg" url="http://cdn.ebaumsworld.com/thumbs/2015/11/24/070634/84832600/assholes.jpg" length="10000"/>
<guid isPermaLink="false">http://www.ebaumsworld.com/pictures/view/84832600/</guid>
</item>
This is my function definition for file_get_contents_curl
: 这是我对file_get_contents_curl
函数定义:
function file_get_contents_curl($url) {
$agent = 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)';
$ch = curl_init();
curl_setopt($ch, CURLOPT_USERAGENT, $agent);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
$data = curl_exec($ch);
curl_close($ch);
return $data;
}
Just use SimpleXMLElement
and access the xml
nodes. 只需使用SimpleXMLElement
并访问xml
节点即可。
$xml = file_get_contents_curl($feed_url);
$x = new SimpleXMLElement($xml);
foreach ($x as $node) {
print $node->title . PHP_EOL;
print $node->description . PHP_EOL;
}
will output 将输出
eBaum's World - Featured Media
The latest featured media
With your url to the actual XML feed, you can simply load it via simplexml_load_file()
: 使用实际XML提要的url,您可以简单地通过simplexml_load_file()
加载它:
<?php
$str = '<?xml version="1.0" encoding="UTF-8"?>
$url = "http://feeds.feedburner.com/ebaumsworld/aUjW":
$xml = simplexml_load_file($url);
foreach ($xml->channel->item as $item)
echo $item->title;
// possible output:24 People Being Complete A$$holes
?>
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