可以在某些网站的多个标题标签之间提取文本的PHP脚本吗? [英] PHP script that can extract text between multiple title tags of certain website?
本文介绍了可以在某些网站的多个标题标签之间提取文本的PHP脚本吗?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
您好，我发现的人很少，尝试了几次，但对我来说真的没有用.我发现最好能提取页面的标题，但是页面上有很多标题标签，并且只提取了第一个.我需要它来提取所有标题.如果也可以 就是这样的代码:
Hello I found few and tried few, but nothing really works for me. Best I found was able to extract title of the page, but there are many title tags on the page and it extracted only the first one. I need it to extract all titles. If it also could It is this code:
<?php
$text = file_get_contents("http://www.example.com");
if (preg_match('~<title[^>]*>(.*?)</title>~si', $text, $body)){
echo $body[1];
}
?>
推荐答案
尝试此解决方案
$text = file_get_contents("http://www.example.com");
preg_match_all('/<title>.*?<\/title>/is', $text, $matches);
foreach($matches[0] as $m)
{
echo htmlentities($m)."<br />";
}
例如:
// input text
$text = <<<EOT
<title>Lorem ipsum dolor</title>
sit amet, consectetur adipisicing elit, sed do eiusmod tempor
incididunt ut labore et dolore magna aliqua.
Ut enim <title>ad minim</title> veniam,
quis nostrud exercitation ullamco laboris nisi ut
aliquip <title>ex ea</title> commodo consequat.
EOT;
// solution
preg_match_all('/<title>(.+?)<\/title>/is', $text, $matches);
foreach($matches[0] as $m)
{
echo htmlentities($m)."<br />";
}
输出:
<title>Lorem ipsum dolor</title>
<title>ad minim</title>
<title>ex ea</title>
POST UPDATED(以反映问题中的更改).
例如，您要加载一些"a.html"文件:
For example you want to load some "a.html" file:
<html>
<body>
Lorem ipsum dolor
<a title="Ravellavegas.com Analysis" href="http://somewebsite.com/" />
sit amet, consectetur adipisicing elit, sed do eiusmod tempor
<a title="Articlesiteslist.com Analysis" href="http://someanotherwebsite.com/" />
incididunt ut labore et dolore magna aliqua.
</body>
</html>
然后，您必须按如下所示编写脚本:
Then, you have to write the script as follows:
<?php
$dom = new DOMDocument();
$dom->load('a.html');
foreach ($dom->getElementsByTagName('a') as $tag) {
echo $tag->getAttribute('title').'<br/>';
}
?>
这将输出:
Ravellavegas.com Analysis
Articlesiteslist.com Analysis
这篇关于可以在某些网站的多个标题标签之间提取文本的PHP脚本吗?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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