当前位置： 文江博客话题详情

通过链接获取网站标题

发布于 2024-10-06 02:32:41 字数 331 浏览 4 评论 0原文

请注意 Google 新闻如何在每篇文章摘录的底部提供来源。

卫报 - ABC 新闻 - 路透社 - 彭博社

我正在尝试模仿这一点。

例如，提交 URL http://www.washingtontimes.com/news/2010/dec/3/debt-panel-fails-test-vote/ 后，我想返回 华盛顿时报

这怎么可能用 php 实现呢？

原文

Notice how Google News has sources on the bottom of each article excerpt.

The Guardian - ABC News - Reuters -
Bloomberg

I'm trying to imitate that.

For example, upon submitting the URL http://www.washingtontimes.com/news/2010/dec/3/debt-panel-fails-test-vote/ I want to return The Washington Times

How is this possible with php?

如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

扫码二维码加入Web技术交流群

发布评论

需要 登录 才能够评论， 你可以免费 注册 一个本站的账号。

评论（10）

好多鱼好多余 2024-10-13 02:32:41

我的答案是对@AI W 使用页面标题的答案的扩展。下面是实现他所说的代码。

<?php

function get_title($url){
  $str = file_get_contents($url);
  if(strlen($str)>0){
    $str = trim(preg_replace('/\s+/', ' ', $str)); // supports line breaks inside <title>
    preg_match("/\<title\>(.*)\<\/title\>/i",$str,$title); // ignore case
    return $title[1];
  }
}
//Example:
echo get_title("http://www.washingtontimes.com/");

?>

输出

华盛顿时报 - 政治，突发
新闻、美国和世界新闻

正如您所看到的，这并不完全是 Google 使用的，因此这让我相信他们获取了 URL 的主机名并将其与自己的列表相匹配。

http://www.washingtontimes.com/ =>华盛顿时报

My answer is expanding on @AI W's answer of using the title of the page. Below is the code to accomplish what he said.

<?php

function get_title($url){
  $str = file_get_contents($url);
  if(strlen($str)>0){
    $str = trim(preg_replace('/\s+/', ' ', $str)); // supports line breaks inside <title>
    preg_match("/\<title\>(.*)\<\/title\>/i",$str,$title); // ignore case
    return $title[1];
  }
}
//Example:
echo get_title("http://www.washingtontimes.com/");

?>

OUTPUT

Washington Times - Politics, Breaking
News, US and World News

As you can see, it is not exactly what Google is using, so this leads me to believe that they get a URL's hostname and match it to their own list.

http://www.washingtontimes.com/ => The Washington Times

回复 原文
盗琴音 2024-10-13 02:32:41
$doc = new DOMDocument();
@$doc->loadHTMLFile('http://www.washingtontimes.com/news/2010/dec/3/debt-panel-fails-test-vote/');
$xpath = new DOMXPath($doc);
echo $xpath->query('//title')->item(0)->nodeValue."\n";

输出：

债务委员会在测试投票中未达标 - 华盛顿时报

显然，您还应该实施基本的错误处理。

$doc = new DOMDocument();
@$doc->loadHTMLFile('http://www.washingtontimes.com/news/2010/dec/3/debt-panel-fails-test-vote/');
$xpath = new DOMXPath($doc);
echo $xpath->query('//title')->item(0)->nodeValue."\n";

Output:

Debt commission falls short on test vote - Washington Times

Obviously you should also implement basic error handling.

回复 原文
七颜 2024-10-13 02:32:41

使用域主页上的 get_meta_tags() ，《纽约时报》会带回一些可能需要截断但可能有用的内容。

$b = "http://www.washingtontimes.com/news/2010/dec/3/debt-panel-fails-test-vote/" ;

$url = parse_url( $b ) ;

$tags = get_meta_tags( $url['scheme'].'://'.$url['host'] );
var_dump( $tags );

包括描述“《华盛顿时报》就影响我们国家未来的问题发表突发新闻和评论。”

Using get_meta_tags() from the domain home page, for NYT brings back something which might need truncating but could be useful.

$b = "http://www.washingtontimes.com/news/2010/dec/3/debt-panel-fails-test-vote/" ;

$url = parse_url( $b ) ;

$tags = get_meta_tags( $url['scheme'].'://'.$url['host'] );
var_dump( $tags );

includes the description 'The Washington Times delivers breaking news and commentary on the issues that affect the future of our nation.'

回复 原文
温柔一刀 2024-10-13 02:32:41

您可以获取 URL 的内容并对 title 元素的内容进行正则表达式搜索。

<?php
$urlContents = file_get_contents("http://example.com/");
preg_match("/<title>(.*)<\/title>/i", $urlContents, $matches);

print($matches[1] . "\n"); // "Example Web Page"
?>

或者，如果您不想使用正则表达式（以匹配非常靠近文档顶部的内容），您可以使用 DOMDocument 对象：

<?php
$urlContents = file_get_contents("http://example.com/");

$dom = new DOMDocument();
@$dom->loadHTML($urlContents);

$title = $dom->getElementsByTagName('title');

print($title->item(0)->nodeValue . "\n"); // "Example Web Page"
?>

我让您自行决定您最喜欢哪种方法。

You could fetch the contents of the URL and do a regular expression search for the content of the title element.

<?php
$urlContents = file_get_contents("http://example.com/");
preg_match("/<title>(.*)<\/title>/i", $urlContents, $matches);

print($matches[1] . "\n"); // "Example Web Page"
?>

Or, if you don't want to use a regular expression (to match something very near the top of the document), you could use a DOMDocument object:

<?php
$urlContents = file_get_contents("http://example.com/");

$dom = new DOMDocument();
@$dom->loadHTML($urlContents);

$title = $dom->getElementsByTagName('title');

print($title->item(0)->nodeValue . "\n"); // "Example Web Page"
?>

I leave it up to you to decide which method you like best.

回复 原文
む无字情书 2024-10-13 02:32:41

cURL 上的 PHP 手册

<?php

$ch = curl_init("http://www.example.com/");
$fp = fopen("example_homepage.txt", "w");

curl_setopt($ch, CURLOPT_FILE, $fp);
curl_setopt($ch, CURLOPT_HEADER, 0);

curl_exec($ch);
curl_close($ch);
fclose($fp);
?>

关于 Perl 正则表达式匹配的 PHP 手册

<?php
$subject = "abcdef";
$pattern = '/^def/';
preg_match($pattern, $subject, $matches, PREG_OFFSET_CAPTURE, 3);
print_r($matches);
?>

将这两个放在一起：

<?php 
// create curl resource 
$ch = curl_init(); 

// set url 
curl_setopt($ch, CURLOPT_URL, "example.com"); 

//return the transfer as a string 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 

// $output contains the output string 
$output = curl_exec($ch); 

$pattern = '/[<]title[>]([^<]*)[<][\/]titl/i';

preg_match($pattern, $output, $matches);

print_r($matches);

// close curl resource to free up system resources 
curl_close($ch);      
?>

我不能保证这个例子会工作，因为我不这里没有 PHP，但它应该可以帮助您入门。

PHP manual on cURL

<?php

$ch = curl_init("http://www.example.com/");
$fp = fopen("example_homepage.txt", "w");

curl_setopt($ch, CURLOPT_FILE, $fp);
curl_setopt($ch, CURLOPT_HEADER, 0);

curl_exec($ch);
curl_close($ch);
fclose($fp);
?>

PHP manual on Perl regex matching

<?php
$subject = "abcdef";
$pattern = '/^def/';
preg_match($pattern, $subject, $matches, PREG_OFFSET_CAPTURE, 3);
print_r($matches);
?>

And putting those two together:

<?php 
// create curl resource 
$ch = curl_init(); 

// set url 
curl_setopt($ch, CURLOPT_URL, "example.com"); 

//return the transfer as a string 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 

// $output contains the output string 
$output = curl_exec($ch); 

$pattern = '/[<]title[>]([^<]*)[<][\/]titl/i';

preg_match($pattern, $output, $matches);

print_r($matches);

// close curl resource to free up system resources 
curl_close($ch);      
?>

I can't promise this example will work since I don't have PHP here, but it should help you get started.

回复 原文
惯饮孤独 2024-10-13 02:32:41

不必要时我会尽量避免使用正则表达式，我已经创建了一个函数来使用下面的curl 和 DOMDocument 获取网站标题。

function website_title($url) {
   $ch = curl_init();
   curl_setopt($ch, CURLOPT_URL, $url);
   curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
   // some websites like Facebook need a user agent to be set.
   curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.94 Safari/537.36');
   $html = curl_exec($ch);
   curl_close($ch);

   $dom  = new DOMDocument;
   @$dom->loadHTML($html);

   $title = $dom->getElementsByTagName('title')->item('0')->nodeValue;
   return $title;
}

echo website_title('https://www.facebook.com/');

上面返回以下内容：欢迎使用 Facebook - 登录、注册或了解更多

I try to avoid regular expressions when it isn't necessary, I have made a function to get the website title with curl and DOMDocument below.

function website_title($url) {
   $ch = curl_init();
   curl_setopt($ch, CURLOPT_URL, $url);
   curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
   // some websites like Facebook need a user agent to be set.
   curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.94 Safari/537.36');
   $html = curl_exec($ch);
   curl_close($ch);

   $dom  = new DOMDocument;
   @$dom->loadHTML($html);

   $title = $dom->getElementsByTagName('title')->item('0')->nodeValue;
   return $title;
}

echo website_title('https://www.facebook.com/');

above returns the following: Welcome to Facebook - Log In, Sign Up or Learn More

回复 原文
两个我 2024-10-13 02:32:41

或者，您可以使用 简单 Html Dom 解析器：

<?php
require_once('simple_html_dom.php');

$html = file_get_html('http://www.washingtontimes.com/news/2010/dec/3/debt-panel-fails-test-vote/');

echo $html->find('title', 0)->innertext . "<br>\n";

echo $html->find('div[class=entry-content]', 0)->innertext;

Alternatively you can use Simple Html Dom Parser:

<?php
require_once('simple_html_dom.php');

$html = file_get_html('http://www.washingtontimes.com/news/2010/dec/3/debt-panel-fails-test-vote/');

echo $html->find('title', 0)->innertext . "<br>\n";

echo $html->find('div[class=entry-content]', 0)->innertext;
回复 原文
三五鸿雁 2024-10-13 02:32:41

我编写了一个函数来处理它：

 function getURLTitle($url){

    $ch = curl_init();

    curl_setopt($ch, CURLOPT_URL, $url);

    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

    $content = curl_exec($ch);

    $contentType = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
    $charset = '';

    if($contentType && preg_match('/\bcharset=(.+)\b/i', $contentType, $matches)){
        $charset = $matches[1];
    }

    curl_close($ch);

    if(strlen($content) > 0 && preg_match('/\<title\b.*\>(.*)\<\/title\>/i', $content, $matches)){
        $title = $matches[1];

        if(!$charset && preg_match_all('/\<meta\b.*\>/i', $content, $matches)){
            //order:
            //http header content-type
            //meta http-equiv content-type
            //meta charset
            foreach($matches as $match){
                $match = strtolower($match);
                if(strpos($match, 'content-type') && preg_match('/\bcharset=(.+)\b/', $match, $ms)){
                    $charset = $ms[1];
                    break;
                }
            }

            if(!$charset){
                //meta charset=utf-8
                //meta charset='utf-8'
                foreach($matches as $match){
                    $match = strtolower($match);
                    if(preg_match('/\bcharset=([\'"])?(.+)\1?/', $match, $ms)){
                        $charset = $ms[1];
                        break;
                    }
                }
            }
        }

        return $charset ? iconv($charset, 'utf-8', $title) : $title;
    }

    return $url;
}

它获取网页内容，并尝试通过 ((从最高优先级到最低优先级) 获取文档字符集编码：

  1. “Content-Type”字段中的 HTTP“字符集”参数。
  2. 带有 META 声明“http-equiv”设置为“Content-Type”，并为“charset”设置值
  3. 指定外部资源的元素上设置的 charset 属性

（请参阅 http://www.w3.org/TR/html4/charset.html)

然后使用 iconv 进行转换标题为 utf-8 编码。

i wrote a function to handle it:

 function getURLTitle($url){

    $ch = curl_init();

    curl_setopt($ch, CURLOPT_URL, $url);

    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

    $content = curl_exec($ch);

    $contentType = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
    $charset = '';

    if($contentType && preg_match('/\bcharset=(.+)\b/i', $contentType, $matches)){
        $charset = $matches[1];
    }

    curl_close($ch);

    if(strlen($content) > 0 && preg_match('/\<title\b.*\>(.*)\<\/title\>/i', $content, $matches)){
        $title = $matches[1];

        if(!$charset && preg_match_all('/\<meta\b.*\>/i', $content, $matches)){
            //order:
            //http header content-type
            //meta http-equiv content-type
            //meta charset
            foreach($matches as $match){
                $match = strtolower($match);
                if(strpos($match, 'content-type') && preg_match('/\bcharset=(.+)\b/', $match, $ms)){
                    $charset = $ms[1];
                    break;
                }
            }

            if(!$charset){
                //meta charset=utf-8
                //meta charset='utf-8'
                foreach($matches as $match){
                    $match = strtolower($match);
                    if(preg_match('/\bcharset=([\'"])?(.+)\1?/', $match, $ms)){
                        $charset = $ms[1];
                        break;
                    }
                }
            }
        }

        return $charset ? iconv($charset, 'utf-8', $title) : $title;
    }

    return $url;
}

it fetches the webpage content, and tries to get document charset encoding by ((from highest priority to lowest):

  1. An HTTP "charset" parameter in a "Content-Type" field.
  2. A META declaration with "http-equiv" set to "Content-Type" and a value set for "charset".
  3. The charset attribute set on an element that designates an external resource.

(see http://www.w3.org/TR/html4/charset.html)

and then uses iconv to convert title to utf-8 encoding.

回复 原文
甜点 2024-10-13 02:32:41

通过链接获取网站标题并将标题转换为utf-8字符编码：

https://gist.github.com /kisexu/b64bc6ab787f302ae838

function getTitle($url)
{
    // get html via url
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_AUTOREFERER, true);
    curl_setopt($ch, CURLOPT_HEADER, 0);
    curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/28.0.1500.71 Safari/537.36");
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    $html = curl_exec($ch);
    curl_close($ch);

    // get title
    preg_match('/(?<=<title>).+(?=<\/title>)/iU', $html, $match);
    $title = empty($match[0]) ? 'Untitled' : $match[0];
    $title = trim($title);

    // convert title to utf-8 character encoding
    if ($title != 'Untitled') {
        preg_match('/(?<=charset\=).+(?=\")/iU', $html, $match);
        if (!empty($match[0])) {
            $charset = str_replace('"', '', $match[0]);
            $charset = str_replace("'", '', $charset);
            $charset = strtolower( trim($charset) );
            if ($charset != 'utf-8') {
                $title = iconv($charset, 'utf-8', $title);
            }
        }
    }

    return $title;
}

Get title of website via link and convert title to utf-8 character encoding：

https://gist.github.com/kisexu/b64bc6ab787f302ae838

function getTitle($url)
{
    // get html via url
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_AUTOREFERER, true);
    curl_setopt($ch, CURLOPT_HEADER, 0);
    curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/28.0.1500.71 Safari/537.36");
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    $html = curl_exec($ch);
    curl_close($ch);

    // get title
    preg_match('/(?<=<title>).+(?=<\/title>)/iU', $html, $match);
    $title = empty($match[0]) ? 'Untitled' : $match[0];
    $title = trim($title);

    // convert title to utf-8 character encoding
    if ($title != 'Untitled') {
        preg_match('/(?<=charset\=).+(?=\")/iU', $html, $match);
        if (!empty($match[0])) {
            $charset = str_replace('"', '', $match[0]);
            $charset = str_replace("'", '', $charset);
            $charset = strtolower( trim($charset) );
            if ($charset != 'utf-8') {
                $title = iconv($charset, 'utf-8', $title);
            }
        }
    }

    return $title;
}
回复 原文
北方的巷 2024-10-13 02:32:41

简单但需要一些时间：

$tags = get_meta_tags('https://google.com');
if (array_key_exists('title', $tags)) {
    # Do something with it
    echo nl2br("Page Title: $tags[title]\n");
}

我还没有尝试过其他人提出的答案来比较性能，但你应该这样做。

Simple but it takes some time:

$tags = get_meta_tags('https://google.com');
if (array_key_exists('title', $tags)) {
    # Do something with it
    echo nl2br("Page Title: $tags[title]\n");
}

I haven't tried the proposed answers by others here to compare for performance, but you should do.

回复 原文
~没有更多了~

关于作者

弥枳

暂无简介

0 文章
0 评论
23 人气
发私信

相关话题

更多

热门标签

操作系统 程序设计 IT运维 Linux系统管理 JavaScript 服务器应用 solaris C/C++ PHP Shell BSD Vue.js aix Oracle Python HTML 系统管理 HTML5 CSS 前端
更多

推荐作者

内心激荡

文章 0 评论 0

JSmiles

文章 0 评论 0

赏烟花じ飞满天

文章 0 评论 0

左秋

文章 0 评论 0

迪街小绵羊

文章 0 评论 0

瞳孔里扚悲伤

文章 0 评论 0

更多

友情链接

文江博客
    我们使用 Cookies 和其他技术来定制您的体验包括您的登录状态等。通过阅读我们的 隐私政策 了解更多相关信息。 单击 接受 或继续使用网站，即表示您同意使用 Cookies 和您的相关数据。
    原文