dbFields = array(
'defaultImage' => '',
'fbAppId' => ''
);
}
public function form()
{
global $L;
$html = '';
$html .= $this->description();
$html .= '
';
$html .= '';
$html .= '';
$html .= '';
$html .= '' . $L->g('set-a-default-image-for-content') . '';
$html .= '
';
$html .= '';
$html .= '';
$html .= '';
$html .= '' . $L->g('set-your-facebook-app-id') . '';
$html .= '
';
return $html;
}
/**
* Sanitize and escape content for use in meta tags
*/
private function sanitize($text, $maxLength = 0)
{
// Strip HTML tags
$text = strip_tags($text);
// Decode HTML entities first to avoid double encoding
$text = html_entity_decode($text, ENT_QUOTES, 'UTF-8');
// Trim whitespace
$text = trim($text);
// Truncate if needed
if ($maxLength > 0 && mb_strlen($text, 'UTF-8') > $maxLength) {
$text = mb_substr($text, 0, $maxLength, 'UTF-8') . '...';
}
// Escape for HTML attribute
return htmlspecialchars($text, ENT_QUOTES, 'UTF-8');
}
public function siteHead()
{
global $url;
global $site;
global $WHERE_AM_I;
global $page;
global $content;
$og = array(
'locale' => $site->locale(),
'type' => 'website',
'title' => $this->sanitize($site->title()),
'description' => $this->sanitize($site->description(), 200),
'url' => $site->url(),
'image' => '',
'siteName' => $this->sanitize($site->title()),
'publishedTime' => '',
'modifiedTime' => '',
'author' => ''
);
switch ($WHERE_AM_I) {
case 'page':
$og['type'] = 'article';
$og['title'] = $this->sanitize($page->title());
// Get description: use page description or fallback to content excerpt
$description = $page->description();
if (empty($description)) {
$description = Text::truncate(strip_tags($page->contentRaw()), 160);
}
$og['description'] = $this->sanitize($description, 200);
$og['url'] = $page->permalink($absolute = true);
$og['image'] = $page->coverImage($absolute = true);
// Article-specific meta tags (ISO 8601 format)
$og['publishedTime'] = $page->date('c');
$dateModified = $page->dateModified('c');
if (!empty($dateModified)) {
$og['modifiedTime'] = $dateModified;
}
$og['author'] = $this->sanitize($page->user('nickname'));
$pageContent = $page->content();
break;
default:
$pageContent = '';
if (Text::isNotEmpty($this->getValue('defaultImage'))) {
$og['image'] = $this->getValue('defaultImage');
} elseif (isset($content[0])) {
$og['image'] = $content[0]->coverImage($absolute = true);
$pageContent = $content[0]->content();
}
break;
}
// Build HTML output
$html = PHP_EOL . '' . PHP_EOL;
$html .= '' . PHP_EOL;
$html .= '' . PHP_EOL;
$html .= '' . PHP_EOL;
$html .= '' . PHP_EOL;
$html .= '' . PHP_EOL;
$html .= '' . PHP_EOL;
// Article-specific tags
if ($og['type'] === 'article') {
if (!empty($og['publishedTime'])) {
$html .= '' . PHP_EOL;
}
if (!empty($og['modifiedTime'])) {
$html .= '' . PHP_EOL;
}
if (!empty($og['author'])) {
$html .= '' . PHP_EOL;
}
}
// If the page doesn't have a coverImage try to get an image from the HTML content
if (empty($og['image'])) {
$src = DOM::getFirstImage($pageContent);
if ($src !== false) {
$og['image'] = $src;
} elseif (Text::isNotEmpty($this->getValue('defaultImage'))) {
$og['image'] = $this->getValue('defaultImage');
}
}
if (!empty($og['image'])) {
$html .= '' . PHP_EOL;
// Add image alt for accessibility
$html .= '' . PHP_EOL;
}
if (Text::isNotEmpty($this->getValue('fbAppId'))) {
$html .= '' . PHP_EOL;
}
return $html;
}
}