lychee/php/helpers/getGraphHeader.php

47 lines
1.8 KiB
PHP

<?php
function getGraphHeader($photoID) {
$photo = new Photo($photoID);
if ($photo->getPublic('')===false) return false;
$query = Database::prepare(Database::get(), "SELECT title, description, url, medium FROM ? WHERE id = '?'", array(LYCHEE_TABLE_PHOTOS, $photoID));
$result = Database::get()->query($query);
$row = $result->fetch_object();
if (!$result||!$row) return false;
if ($row->medium==='1') $dir = 'medium';
else $dir = 'big';
$parseUrl = parse_url('http://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']);
$url = $parseUrl['scheme'] . '://' . $parseUrl['host'] . $parseUrl['path'] . '?' . $parseUrl['query'];
$picture = $parseUrl['scheme'] . '://' . $parseUrl['host'] . $parseUrl['path'] . '/../uploads/' . $dir . '/' . $row->url;
$url = htmlentities($url);
$picture = htmlentities($picture);
$row->title = htmlentities($row->title);
$row->description = htmlentities($row->description);
$return = '<!-- General Meta Data -->';
$return .= '<meta name="title" content="' . $row->title . '">';
$return .= '<meta name="description" content="' . $row->description . ' - via Lychee">';
$return .= '<link rel="image_src" type="image/jpeg" href="' . $picture . '">';
$return .= '<!-- Twitter Meta Data -->';
$return .= '<meta name="twitter:card" content="photo">';
$return .= '<meta name="twitter:title" content="' . $row->title . '">';
$return .= '<meta name="twitter:image:src" content="' . $picture . '">';
$return .= '<!-- Facebook Meta Data -->';
$return .= '<meta property="og:title" content="' . $row->title . '">';
$return .= '<meta property="og:description" content="' . $row->description . ' - via Lychee">';
$return .= '<meta property="og:image" content="' . $picture . '">';
$return .= '<meta property="og:url" content="' . $url . '">';
return $return;
}
?>