function.video.php

<?php



/**
 * Extracts the daily motion id from a daily motion url.
 * Returns false if the url is not recognized as a daily motion url.
 */
function getDailyMotionId($url)
{

    if (preg_match('!^.+dailymotion\.com/(video|hub)/([^_]+)[^#]*(#video=([^_&]+))?|(dai\.ly/([^_]+))!', $url, $m)) {
        if (isset($m[6])) {
            return $m[6];
        }
        if (isset($m[4])) {
            return $m[4];
        }
        return $m[2];
    }
    return false;
}


/**
 * Extracts the vimeo id from a vimeo url.
 * Returns false if the url is not recognized as a vimeo url.
 */
function getVimeoId($url)
{
    if (preg_match('#(?:https?://)?(?:www.)?(?:player.)?vimeo.com/(?:[a-z]*/)*([0-9]{6,11})[?]?.*#', $url, $m)) {
        return $m[1];
    }
    return false;
}

/**
 * Extracts the youtube id from a youtube url.
 * Returns false if the url is not recognized as a youtube url.
 */
function getYoutubeId($url)
{
    $parts = parse_url($url);
    if (isset($parts['host'])) {
        $host = $parts['host'];
        if (
            false === strpos($host, 'youtube') &&
            false === strpos($host, 'youtu.be')
        ) {
            return false;
        }
    }
    if (isset($parts['query'])) {
        parse_str($parts['query'], $qs);
        if (isset($qs['v'])) {
            return $qs['v'];
        }
        else if (isset($qs['vi'])) {
            return $qs['vi'];
        }
    }
    if (isset($parts['path'])) {
        $path = explode('/', trim($parts['path'], '/'));
        return $path[count($path) - 1];
    }
    return false;
}


/**
 * Gets the thumbnail url associated with an url from either:
 *
 *      - youtube
 *      - daily motion
 *      - vimeo
 *
 * Returns false if the url couldn't be identified.
 *
 * In the case of you tube, we can use the second parameter (format), which
 * takes one of the following values:
 *      - small         (returns the url for a small thumbnail)
 *      - medium        (returns the url for a medium thumbnail)
 *
 *
 *
 */
function getVideoThumbnailByUrl($url, $format = 'small')
{
    if (false !== ($id = getVimeoId($url))) {
        $hash = unserialize(file_get_contents("http://vimeo.com/api/v2/video/$id.php"));
        /**
         * thumbnail_small
         * thumbnail_medium
         * thumbnail_large
         */
        return $hash[0]['thumbnail_large'];
    }
    elseif (false !== ($id = getDailyMotionId($url))) {
        return 'http://www.dailymotion.com/thumbnail/video/' . $id;
    }
    elseif (false !== ($id = getYoutubeId($url))) {
        /**
         * http://img.youtube.com/vi/<insert-youtube-video-id-here>/0.jpg
         * http://img.youtube.com/vi/<insert-youtube-video-id-here>/1.jpg
         * http://img.youtube.com/vi/<insert-youtube-video-id-here>/2.jpg
         * http://img.youtube.com/vi/<insert-youtube-video-id-here>/3.jpg
         *
         * http://img.youtube.com/vi/<insert-youtube-video-id-here>/default.jpg
         * http://img.youtube.com/vi/<insert-youtube-video-id-here>/hqdefault.jpg
         * http://img.youtube.com/vi/<insert-youtube-video-id-here>/mqdefault.jpg
         * http://img.youtube.com/vi/<insert-youtube-video-id-here>/sddefault.jpg
         * http://img.youtube.com/vi/<insert-youtube-video-id-here>/maxresdefault.jpg
         */
        if ('medium' === $format) {
            return 'http://img.youtube.com/vi/' . $id . '/hqdefault.jpg';
        }
        return 'http://img.youtube.com/vi/' . $id . '/default.jpg';
    }
    return false;
}

/**
 * Returns the location of the actual video for a given url which belongs to either:
 *
 *      - youtube
 *      - daily motion
 *      - vimeo
 *
 * Or returns false in case of failure.
 * This function can be used for creating video sitemaps.
 */
function getVideoLocation($url)
{
    if (false !== ($id = getDailyMotionId($url))) {
        return 'http://www.dailymotion.com/embed/video/' . $id;
    }
    elseif (false !== ($id = getVimeoId($url))) {
        return 'http://player.vimeo.com/video/' . $id;
    }
    elseif (false !== ($id = getYoutubeId($url))) {
        return 'http://www.youtube.com/embed/' . $id;
    }
    return false;
}

/**
 * Returns the html code for an embed responsive video, for a given url.
 * The url has to be either from:
 * - youtube
 * - daily motion
 * - vimeo
 *
 * Returns false in case of failure
 */
function getEmbedVideo($url)
{

    $code = <<<EEE
    <style>
        .embed-container { 
            position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; 
        }
        .embed-container iframe, .embed-container object, .embed-container embed { 
            position: absolute; top: 0; left: 0; width: 100%; height: 100%; 
        }
    </style>
EEE;


    if (false !== ($id = getDailyMotionId($url))) {
        $code .= <<<EEE
<div class='embed-container'><iframe src='http://www.dailymotion.com/embed/video/$id' frameborder='0' webkitAllowFullScreen mozallowfullscreen allowFullScreen></iframe></div>
EEE;

    }
    elseif (false !== ($id = getVimeoId($url))) {
        $code .= <<<EEE
<div class='embed-container'><iframe src='http://player.vimeo.com/video/$id' frameborder='0' webkitAllowFullScreen mozallowfullscreen allowFullScreen></iframe></div>
EEE;
    }
    elseif (false !== ($id = getYoutubeId($url))) {
        $code .= <<<EEE
<div class='embed-container'><iframe src='http://www.youtube.com/embed/$id' frameborder='0' allowfullscreen></iframe></div>
EEE;
    }
    else {
        $code = false;
    }
    return $code;
}