web-dev-qa-db-fra.com

comment extraire des liens et des titres d'une page .html?

pour mon site web, je voudrais ajouter une nouvelle fonctionnalité.

Je voudrais que l'utilisateur puisse télécharger son fichier de sauvegarde des signets (à partir de n'importe quel navigateur si possible) afin que je puisse le télécharger sur son profil et qu'il n'a pas à les insérer tous manuellement ...

la seule partie qui me manque pour le faire est la partie de l'extraction du titre et de l'URL du fichier téléchargé. Quelqu'un peut-il donner un indice par où commencer ou où lire?

utilisé l'option de recherche et ( Comment extraire des données d'un fichier HTML brut? ) c'est la question la plus connexe pour la mienne et elle n'en parle pas ..

Cela ne me dérange vraiment pas si son utilisation de jquery ou php

Merci beaucoup.

phphtmlstringhyperlinkweb-crawler
31
Toni Michel Caubet

Merci à tous, je l'ai eu!

Le code final:

$html = file_get_contents('bookmarks.html');
//Create a new DOM document
$dom = new DOMDocument;

//Parse the HTML. The @ is used to suppress any parsing errors
//that will be thrown if the $html string isn't valid XHTML.
@$dom->loadHTML($html);

//Get all links. You could also use any other tag name here,
//like 'img' or 'table', to extract other tags.
$links = $dom->getElementsByTagName('a');

//Iterate over the extracted links and display their URLs
foreach ($links as $link){
    //Extract and show the "href" attribute.
    echo $link->nodeValue;
    echo $link->getAttribute('href'), '<br>';
}

Cela vous montre le texte ancre attribué et le href pour tous les liens dans un fichier . Html .

Encore merci.

58
Toni Michel Caubet

C'est probablement suffisant:

$dom = new DOMDocument;
$dom->loadHTML($html);
foreach ($dom->getElementsByTagName('a') as $node)
{
  echo $node->nodeValue.': '.$node->getAttribute("href")."\n";
}
34
Matthew

En supposant que les liens stockés se trouvent dans un fichier html, la meilleure solution est probablement d'utiliser un analyseur html tel que PHP Simple HTML DOM Parser (jamais essayé moi-même). (L'autre option consiste à rechercher à l'aide de la recherche de chaîne de base ou de l'expression rationnelle, et vous ne devriez probablement jamais utiliser l'expression rationnelle pour analyser le code html).

Après avoir lu le fichier html à l'aide de l'analyseur, utilisez ses fonctions pour trouver les balises a:

du tutoriel:

// Find all links
foreach($html->find('a') as $element)
       echo $element->href . '<br>';
5
Simon Groenewolt

Ceci est un exemple, vous pouvez utiliser dans votre cas ceci:

$content = file_get_contents('bookmarks.html');

Lance ça:

<?php

$content = '<html>

<title>Random Website I am Crawling</title>

<body>

Click <a href="http://clicklink.com">here</a> for foobar

Another site is http://foobar.com

</body>

</html>';

$regex = "((https?|ftp)\:\/\/)?"; // SCHEME
$regex .= "([a-z0-9+!*(),;?&=\$_.-]+(\:[a-z0-9+!*(),;?&=\$_.-]+)?@)?"; // User and Pass
$regex .= "([a-z0-9-.]*)\.([a-z]{2,4})"; // Host or IP
$regex .= "(\:[0-9]{2,5})?"; // Port
$regex .= "(\/([a-z0-9+\$_-]\.?)+)*\/?"; // Path
$regex .= "(\?[a-z+&\$_.-][a-z0-9;:@&%=+\/\$_.-]*)?"; // GET Query
$regex .= "(#[a-z_.-][a-z0-9+\$_.-]*)?"; // Anchor


$matches = array(); //create array
$pattern = "/$regex/";

preg_match_all($pattern, $content, $matches); 

print_r(array_values(array_unique($matches[0])));
echo "<br><br>";
echo implode("<br>", array_values(array_unique($matches[0])));

Production:

Array
(
    [0] => http://clicklink.com
    [1] => http://foobar.com
)

http://clicklink.com

http://foobar.com

4
Adrian Cid Almaguer
$html = file_get_contents('your file path');

$dom = new DOMDocument;

@$dom->loadHTML($html);

$styles = $dom->getElementsByTagName('link');

$links = $dom->getElementsByTagName('a');

$scripts = $dom->getElementsByTagName('script');

foreach($styles as $style)
{

    if($style->getAttribute('href')!="#")

    {
        echo $style->getAttribute('href');
        echo'<br>';
    }
}

foreach ($links as $link){

    if($link->getAttribute('href')!="#")
    {
        echo $link->getAttribute('href');
        echo'<br>';
    }
}

foreach($scripts as $script)
{

        echo $script->getAttribute('src');
        echo'<br>';

}
1
Raghavendra

Voici mon travail pour un de mes clients et faites-en une fonction à utiliser partout.

function getValidUrlsFrompage($source)
  {
    $links = [];
    $content = file_get_contents($source);
    $content = strip_tags($content, "<a>");
    $subString = preg_split("/<\/a>/", $content);
    foreach ($subString as $val) {
      if (strpos($val, "<a href=") !== FALSE) {
        $val = preg_replace("/.*<a\s+href=\"/sm", "", $val);
        $val = preg_replace("/\".*/", "", $val);
        $val = trim($val);
      }
      if (strlen($val) > 0 && filter_var($val, FILTER_VALIDATE_URL)) {
        if (!in_array($val, $links)) {
          $links[] = $val;
        }
      }
    }
    return $links;
  }

Et utilisez-le comme

$links = getValidUrlsFrompage("https://www.w3resource.com/");

Et la sortie attendue est d'obtenir 99 URL dans un tableau,

Array ( [0] => https://www.w3resource.com [1] => https://www.w3resource.com/html/HTML-tutorials.php [2] => https://www.w3resource.com/css/CSS-tutorials.php [3] => https://www.w3resource.com/javascript/javascript.php [4] => https://www.w3resource.com/html5/introduction.php [5] => https://www.w3resource.com/schema.org/introduction.php [6] => https://www.w3resource.com/phpjs/use-php-functions-in-javascript.php [7] => https://www.w3resource.com/Twitter-bootstrap/tutorial.php [8] => https://www.w3resource.com/responsive-web-design/overview.php [9] => https://www.w3resource.com/zurb-foundation3/introduction.php [10] => https://www.w3resource.com/pure/ [11] => https://www.w3resource.com/html5-canvas/ [12] => https://www.w3resource.com/course/javascript-course.html [13] => https://www.w3resource.com/icon/ [14] => https://www.w3resource.com/linux-system-administration/installation.php [15] => https://www.w3resource.com/linux-system-administration/linux-commands-introduction.php [16] => https://www.w3resource.com/php/php-home.php [17] => https://www.w3resource.com/python/python-tutorial.php [18] => https://www.w3resource.com/Java-tutorial/ [19] => https://www.w3resource.com/node.js/node.js-tutorials.php [20] => https://www.w3resource.com/Ruby/ [21] => https://www.w3resource.com/c-programming/programming-in-c.php [22] => https://www.w3resource.com/sql/tutorials.php [23] => https://www.w3resource.com/mysql/mysql-tutorials.php [24] => https://w3resource.com/PostgreSQL/tutorial.php [25] => https://www.w3resource.com/sqlite/ [26] => https://www.w3resource.com/mongodb/nosql.php [27] => https://www.w3resource.com/API/google-plus/tutorial.php [28] => https://www.w3resource.com/API/youtube/tutorial.php [29] => https://www.w3resource.com/API/google-maps/index.php [30] => https://www.w3resource.com/API/flickr/tutorial.php [31] => https://www.w3resource.com/API/last.fm/tutorial.php [32] => https://www.w3resource.com/API/Twitter-rest-api/ [33] => https://www.w3resource.com/xml/xml.php [34] => https://www.w3resource.com/JSON/introduction.php [35] => https://www.w3resource.com/ajax/introduction.php [36] => https://www.w3resource.com/html-css-exercise/index.php [37] => https://www.w3resource.com/javascript-exercises/ [38] => https://www.w3resource.com/jquery-exercises/ [39] => https://www.w3resource.com/jquery-ui-exercises/ [40] => https://www.w3resource.com/coffeescript-exercises/ [41] => https://www.w3resource.com/php-exercises/ [42] => https://www.w3resource.com/python-exercises/ [43] => https://www.w3resource.com/c-programming-exercises/ [44] => https://www.w3resource.com/csharp-exercises/ [45] => https://www.w3resource.com/Java-exercises/ [46] => https://www.w3resource.com/sql-exercises/ [47] => https://www.w3resource.com/Oracle-exercises/ [48] => https://www.w3resource.com/mysql-exercises/ [49] => https://www.w3resource.com/sqlite-exercises/ [50] => https://www.w3resource.com/postgresql-exercises/ [51] => https://www.w3resource.com/mongodb-exercises/ [52] => https://www.w3resource.com/Twitter-bootstrap/examples.php [53] => https://www.w3resource.com/euler-project/ [54] => https://w3resource.com/w3skills/html5-quiz/ [55] => https://w3resource.com/w3skills/php-fundamentals/ [56] => https://w3resource.com/w3skills/sql-beginner/ [57] => https://w3resource.com/w3skills/python-beginner-quiz/ [58] => https://w3resource.com/w3skills/mysql-basic-quiz/ [59] => https://w3resource.com/w3skills/javascript-basic-skill-test/ [60] => https://w3resource.com/w3skills/javascript-advanced-quiz/ [61] => https://w3resource.com/w3skills/javascript-quiz-part-iii/ [62] => https://w3resource.com/w3skills/mongodb-basic-quiz/ [63] => https://www.w3resource.com/form-template/ [64] => https://www.w3resource.com/slides/ [65] => https://www.w3resource.com/convert/number/binary-to-decimal.php [66] => https://www.w3resource.com/Excel/ [67] => https://www.w3resource.com/video-tutorial/php/some-basics-of-php.php [68] => https://www.w3resource.com/video-tutorial/javascript/list-of-tutorial.php [69] => https://www.w3resource.com/web-development-tools/firebug-tutorials.php [70] => https://www.w3resource.com/web-development-tools/useful-web-development-tools.php [71] => https://www.facebook.com/w3resource [72] => https://Twitter.com/w3resource [73] => https://plus.google.com/+W3resource [74] => https://in.linkedin.com/in/w3resource [75] => https://feeds.feedburner.com/W3resource [76] => https://www.w3resource.com/Ruby-exercises/ [77] => https://www.w3resource.com/graphics/matplotlib/ [78] => https://www.w3resource.com/python-exercises/numpy/index.php [79] => https://www.w3resource.com/python-exercises/pandas/index.php [80] => https://w3resource.com/plsql-exercises/ [81] => https://w3resource.com/Swift-programming-exercises/ [82] => https://www.w3resource.com/angular/getting-started-with-angular.php [83] => https://www.w3resource.com/react/react-js-overview.php [84] => https://www.w3resource.com/vue/installation.php [85] => https://www.w3resource.com/jest/jest-getting-started.php [86] => https://www.w3resource.com/numpy/ [87] => https://www.w3resource.com/php/composer/a-gentle-introduction-to-composer.php [88] => https://www.w3resource.com/php/PHPUnit/a-gentle-introduction-to-unit-test-and-testing.php [89] => https://www.w3resource.com/laravel/laravel-tutorial.php [90] => https://www.w3resource.com/Oracle/index.php [91] => https://www.w3resource.com/redis/index.php [92] => https://www.w3resource.com/cpp-exercises/ [93] => https://www.w3resource.com/r-programming-exercises/ [94] => https://w3resource.com/w3skills/ [95] => https://creativecommons.org/licenses/by-nc-sa/3.0/deed.en_US [96] => https://www.w3resource.com/privacy.php [97] => https://www.w3resource.com/about.php [98] => https://www.w3resource.com/contact.php [99] => https://www.w3resource.com/feedback.php [100] => https://www.w3resource.com/advertise.php )

J'espère que cela aidera quelqu'un. Et voici un Gist - https://Gist.github.com/ManiruzzamanAkash/74cffb9ffdfc92f57bd9cf214cf13491

0
Maniruzzaman Akash

Je voulais créer un CSV de chemins de liens et leur texte à partir de pages html afin de pouvoir extraire des menus, etc. à partir de sites.

Dans cet exemple, vous spécifiez le domaine qui vous intéresse afin de ne pas obtenir de liens hors site, puis il produit un CSV par document

/**
 * Extracts links to the given domain from the files and creates CSVs of the links
 */


$LinkExtractor = new LinkExtractor('https://www.example.co.uk');

$LinkExtractor->extract(__DIR__ . '/hamburger.htm');
$LinkExtractor->extract(__DIR__ . '/navbar.htm');
$LinkExtractor->extract(__DIR__ . '/footer.htm');

class LinkExtractor {
    public $domain;

    public function __construct($domain) {
      $this->domain = $domain;
    }

    public function extract($file) {
        $html = file_get_contents($file);
        //Create a new DOM document
        $dom = new DOMDocument;

        //Parse the HTML. The @ is used to suppress any parsing errors
        //that will be thrown if the $html string isn't valid XHTML.
        @$dom->loadHTML($html);

        //Get all links. You could also use any other tag name here,
        //like 'img' or 'table', to extract other tags.
        $links = $dom->getElementsByTagName('a');

        $results = [];
        //Iterate over the extracted links and display their URLs
        foreach ($links as $link){
            //Extract and sput the matching links in an array for the CSV
            $href = $link->getAttribute('href');
            $parts = parse_url($href);
            if (!empty($parts['path']) && strpos($this->domain, $parts['Host']) !== false) {
                $results[$parts['path']] = [$parts['path'], $link->nodeValue];
            }
        }

        asort($results);
        // Make the CSV
        $fp = fopen($file .'.csv', 'w');
        foreach ($results as $fields) {
            fputcsv($fp, $fields);
        }
        fclose($fp);
    }
}
0
Tom Gould