107 lines
2.8 KiB
PHP
107 lines
2.8 KiB
PHP
<?php
|
|
|
|
class pluginOpenGraph extends Plugin {
|
|
|
|
// Returns the first image that is in the content
|
|
private function getImage($content)
|
|
{
|
|
$dom = new DOMDocument();
|
|
$dom->loadHTML('<meta http-equiv="content-type" content="text/html; charset=utf-8">'.$content);
|
|
$finder = new DomXPath($dom);
|
|
|
|
/* DEPRECATED
|
|
$images = $finder->query("//img[contains(@class, 'bludit-img-opengraph')]");
|
|
|
|
if($images->length==0) {
|
|
$images = $finder->query("//img");
|
|
}
|
|
*/
|
|
|
|
$images = $finder->query("//img");
|
|
|
|
if($images->length>0)
|
|
{
|
|
// First image from the list
|
|
$image = $images->item(0);
|
|
// Get value from attribute src
|
|
$imgSrc = $image->getAttribute('src');
|
|
// Returns the image src
|
|
return $imgSrc;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
public function siteHead()
|
|
{
|
|
global $Url, $Site;
|
|
global $Post, $Page, $posts;
|
|
|
|
$og = array(
|
|
'locale' =>$Site->locale(),
|
|
'type' =>'website',
|
|
'title' =>$Site->title(),
|
|
'description' =>$Site->description(),
|
|
'url' =>$Site->url(),
|
|
'image' =>'',
|
|
'siteName' =>$Site->title()
|
|
);
|
|
|
|
switch($Url->whereAmI())
|
|
{
|
|
case 'post':
|
|
$og['type'] = 'article';
|
|
$og['title'] = $Post->title().' | '.$og['title'];
|
|
$og['description'] = $Post->description();
|
|
$og['url'] = $Post->permalink(true);
|
|
$og['image'] = $Post->coverImage(false);
|
|
|
|
$content = $Post->content();
|
|
break;
|
|
|
|
case 'page':
|
|
$og['type'] = 'article';
|
|
$og['title'] = $Page->title().' | '.$og['title'];
|
|
$og['description'] = $Page->description();
|
|
$og['url'] = $Page->permalink(true);
|
|
$og['image'] = $Page->coverImage(false);
|
|
|
|
$content = $Page->content();
|
|
break;
|
|
|
|
default:
|
|
if(isset($posts[0])) {
|
|
$og['image'] = $posts[0]->coverImage(false);
|
|
$content = $posts[0]->content();
|
|
}
|
|
break;
|
|
}
|
|
|
|
$html = PHP_EOL.'<!-- Open Graph -->'.PHP_EOL;
|
|
$html .= '<meta property="og:locale" content="'.$og['locale'].'">'.PHP_EOL;
|
|
$html .= '<meta property="og:type" content="'.$og['type'].'">'.PHP_EOL;
|
|
$html .= '<meta property="og:title" content="'.$og['title'].'">'.PHP_EOL;
|
|
$html .= '<meta property="og:description" content="'.$og['description'].'">'.PHP_EOL;
|
|
$html .= '<meta property="og:url" content="'.$og['url'].'">'.PHP_EOL;
|
|
$html .= '<meta property="og:siteName" content="'.$og['siteName'].'">'.PHP_EOL;
|
|
|
|
$domain = trim($Site->domain(),'/');
|
|
$urlImage = $domain.HTML_PATH_UPLOADS;
|
|
|
|
// If the post o page doesn't have a coverImage try to get it from the content
|
|
if($og['image']===false)
|
|
{
|
|
// Get the image from the content
|
|
$src = $this->getImage( $content );
|
|
if($src!==false) {
|
|
$html .= '<meta property="og:image" content="'.$urlImage.$og['image'].'">'.PHP_EOL;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
$html .= '<meta property="og:image" content="'.$urlImage.$og['image'].'">'.PHP_EOL;
|
|
}
|
|
|
|
return $html;
|
|
}
|
|
} |