Created
April 20, 2015 23:48
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Dynamic RSS feeds from Youtube links
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| <?php | |
| if (!isset($_GET['url'])) { | |
| ?> | |
| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <title>Youtube RSS creator</title> | |
| <form> | |
| <p>Create an RSS feed for the videos on the following page: | |
| <p><input name="url" placeholder="E.g. https://www.youtube.com/user/scishow/videos" style="width: 30em"> | |
| <p><input type="submit" value="Create"> | |
| </form> | |
| <?php | |
| exit; | |
| } | |
| $url = $_GET['url']; | |
| $host = preg_replace('#^(https?://[^/]+).*#', '$1', $url); | |
| $author = preg_replace('#^(https?://[^/])/user/([^/]+).*#', '$1', $url); | |
| $html = file_get_contents($url); | |
| $doc = new DOMDocument(); | |
| $doc->loadHTML($html); | |
| $xpath = new DOMXpath($doc); | |
| $mainTitle = $xpath->query('//title')->item(0)->nodeValue; | |
| $links = $xpath->query('//a[starts-with(@href, "/watch")]'); | |
| $entries = []; | |
| if (!is_null($links)) { | |
| foreach ($links as $link) { | |
| $href = $link->getAttribute('href'); | |
| $title = $link->getAttribute('title'); | |
| if ($title === '') | |
| $title = trim($link->nodeValue); | |
| if (!isset($entries[$href]) || strlen($entries[$href]) < strlen($title)) | |
| $entries[$href] = $title; | |
| } | |
| } | |
| header('Content-Type: application/atom+xml; charset=utf-8'); | |
| $mainTitle = htmlspecialchars($mainTitle); | |
| $protocol = $_SERVER['HTTPS'] === 'on' ? 'https' : 'http'; | |
| $port = ":$_SERVER[SERVER_PORT]"; | |
| if (($protocol === 'http' && $port === ":80") || ($protocol === 'https' && $port === ":443")) | |
| $port = ''; | |
| $self = htmlspecialchars("$protocol://$_SERVER[SERVER_NAME]$port$_SERVER[REQUEST_URI]"); | |
| $url = htmlspecialchars($url); | |
| $author = htmlspecialchars($author); | |
| $updated = time(); | |
| $updated -= $updated % 60; | |
| ?> | |
| <?xml version="1.0" encoding="utf-8"?> | |
| <feed xmlns="http://www.w3.org/2005/Atom"> | |
| <title type="text"><?= $mainTitle ?></title> | |
| <link rel="self" href="<?= $self ?>" type="application/atom+xml" /> | |
| <link rel="alternate" href="<?= $url ?>" type="text/html" /> | |
| <updated><?= date('c', $updated) ?></updated> | |
| <id><?= $url ?></id> | |
| <?php | |
| foreach ($entries as $entryUrl => $title) { | |
| $entryUrl = htmlspecialchars("$host$entryUrl"); | |
| $title = htmlspecialchars($title); | |
| $updated -= 60; | |
| ?> | |
| <entry> | |
| <id><?= $entryUrl ?></id> | |
| <title type="text"><?= $title ?></title> | |
| <link rel="alternate" href="<?= $entryUrl ?>" /> | |
| <author> | |
| <name><?= $author ?></name> | |
| </author> | |
| <updated><?= date('c', $updated) ?></updated> | |
| </entry> | |
| <?php | |
| } | |
| ?> | |
| </feed> |
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@bay122 removed the "?" at line 47