else if 구분 좀 알수있을까요? 채택완료

if(!function_exists('get_og_from_html')) {
    function get_og_from_html($html){        
        $enc = mb_detect_encoding($html, array("UTF-8", "EUC-KR", "SJIS"));        
        libxml_use_internal_errors(true);
        $doc = new DomDocument();
        $doc->loadHTML(mb_convert_encoding($html, 'HTML-ENTITIES', $enc));
        $xpath = new DOMXPath($doc);
        $query = '//*/meta[starts-with(@property, \'og:\')]';
        $metas = $xpath->query($query);
        $og = array();
        foreach ($metas as $meta) {
            $property = $meta->getAttribute('property');
            $content = $meta->getAttribute('content');
            $og[$property] = $content;
        }        
        return $og;
    }
}