oembed.php

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  1. oembed.php
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<?php

function oembed_get_data($video_url, array $params = array(), &$error = null)
{
    $html = @file_get_contents($video_url);
    
    if (!$html)
    {
        $error = 'Could not download video page';
        return false;
    }
    
    $links = oebmed_parse_links($html);
    
    // discover oembed api location using by searching for <link/> elements
    foreach ($links as $link)
    {
        if (!isset($link['type']) || empty($link['href']))
            continue;
        
        $oembed_url = $link['href'];
        
        if (!empty($params))
            $oembed_url .= (strpos($oembed_url, '?') === false ? '?' : '&')
                . http_build_query($params);
        
        if ($link['type'] == 'application/xml+oembed' || $link['type'] == 'text/xml+oembed')
            return oembed_get_xml_data($link['href'], $error);
        
        if ($link['type'] == 'application/json+oembed')
            return oembed_get_json_data($link['href'], $error);
    }
    
    // fallback using embed.ly
    $params = array_merge($params, array('url' => $video_url, 'format' => 'json'));
    $embedly_uri = 'http://api.embed.ly/1/oembed?' . http_build_query($params);
    
    return oembed_get_json_data($embedly_uri, $error);
}

function oebmed_parse_links($html)
{
    $links = array();
    
    // pattern gesplitst voor PHPhulp highlighting
    if (preg_match_all('{<link ([^<>]+)/?'.'>}i', $html, $matches))
        foreach ($matches[1] as $attributes_str)
        {
            preg_match_all('{([a-z]+)=(["\'])(.+?)\2}i', $attributes_str, $amatches, PREG_SET_ORDER);
        
            $attributes = array();
            foreach ($amatches as $amatch)
                $attributes[$amatch[1]] = html_entity_decode($amatch[3]);
        
            $links[] = $attributes;
        }
    
    return $links;
}

function oembed_get_xml_data($oembed_url, &$error = null)
{
    $xml = @simplexml_load_file($oembed_url);
    
    if (!$xml)
    {
        $error = 'Could not parse or load oembed xml data';
        return false;
    }
    
    $data = new stdClass;
    
    foreach ($xml as $property => $value)
        $data->$property = (string) $value;
    
    return $data;
}

function oembed_get_json_data($oembed_url, &$error = null)
{
    $json = @file_get_contents($oembed_url);
    
    if (!$json)
    {
        $error = 'Could not download oembed json data';
        return false;
    }
    
    $data = @json_decode($json);
    
    if (!$data)
    {
        $error = 'Could not parse oembed json data';
        return false;
    }
    
    return (object) $data;
}

 
 

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