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<?php
/**
* Given a string containing any combination of YouTube and Vimeo video URLs in
* a variety of formats (iframe, shortened, etc), each separated by a line break,
* parse the video string and determine it's valid embeddable URL for usage in
* popular JavaScript lightbox plugins.
*
* In addition, this handler grabs both the maximize size and thumbnail versions
* of video images for your general consumption. In the case of Vimeo, you must
* have the ability to make remote calls using file_get_contents(), which may be
* a problem on shared hosts.
*
* Data gets returned in the format:
*
* array(
* array(
* 'url' => 'http://path.to/embeddable/video',
* 'thumbnail' => 'http://path.to/thumbnail/image.jpg',
* 'fullsize' => 'http://path.to/fullsize/image.jpg',
* )
* )
*
* @param string $videoString
* @return array An array of video metadata if found
*
* @author Corey Ballou http://coreyballou.com
* @copyright (c) 2012 Skookum Digital Works http://skookum.com
* @license
*/
function parseVideos($videoString = null)
{
// return data
$videos = array();
if (!empty($videoString)) {
// split on line breaks
$videoString = stripslashes(trim($videoString));
$videoString = explode("\n", $videoString);
$videoString = array_filter($videoString, 'trim');
// check each video for proper formatting
foreach ($videoString as $video) {
// check for iframe to get the video url
if (strpos($video, 'iframe') !== FALSE) {
// retrieve the video url
$anchorRegex = '/src="(.*)?"/isU';
$results = array();
if (preg_match($anchorRegex, $video, $results)) {
$link = trim($results[1]);
}
} else {
// we already have a url
$link = $video;
}
// if we have a URL, parse it down
if (!empty($link)) {
// initial values
$video_id = NULL;
$videoIdRegex = NULL;
$results = array();
// check for type of youtube link
if (strpos($link, 'youtu') !== FALSE) {
if (strpos($link, 'youtube.com') !== FALSE) {
// works on:
// http://www.youtube.com/embed/VIDEOID
// http://www.youtube.com/embed/VIDEOID?modestbranding=1&amp;rel=0
// http://www.youtube.com/v/VIDEO-ID?fs=1&amp;hl=en_US
$videoIdRegex = '/youtube.com\/(?:embed|v){1}\/([a-zA-Z0-9_]+)\??/i';
} else if (strpos($link, 'youtu.be') !== FALSE) {
// works on:
// http://youtu.be/daro6K6mym8
$videoIdRegex = '/youtu.be\/([a-zA-Z0-9_]+)\??/i';
}
if ($videoIdRegex !== NULL) {
if (preg_match($videoIdRegex, $link, $results)) {
$video_str = 'http://www.youtube.com/v/%s?fs=1&amp;autoplay=1';
$thumbnail_str = 'http://img.youtube.com/vi/%s/2.jpg';
$fullsize_str = 'http://img.youtube.com/vi/%s/0.jpg';
$video_id = $results[1];
}
}
}
// handle vimeo videos
else if (strpos($video, 'vimeo') !== FALSE) {
if (strpos($video, 'player.vimeo.com') !== FALSE) {
// works on:
// http://player.vimeo.com/video/37985580?title=0&amp;byline=0&amp;portrait=0
$videoIdRegex = '/player.vimeo.com\/video\/([0-9]+)\??/i';
} else {
// works on:
// http://vimeo.com/37985580
$videoIdRegex = '/vimeo.com\/([0-9]+)\??/i';
}
if ($videoIdRegex !== NULL) {
if (preg_match($videoIdRegex, $link, $results)) {
$video_id = $results[1];
// get the thumbnail
try {
$hash = unserialize(file_get_contents("http://vimeo.com/api/v2/video/$video_id.php"));
if (!empty($hash) && is_array($hash)) {
$video_str = 'http://vimeo.com/moogaloop.swf?clip_id=%s';
$thumbnail_str = $hash[0]['thumbnail_small'];
$fullsize_str = $hash[0]['thumbnail_large'];
} else {
// don't use, couldn't find what we need
unset($video_id);
}
} catch (Exception $e) {
unset($video_id);
}
}
}
}
// check if we have a video id, if so, add the video metadata
if (!empty($video_id)) {
// add to return
$videos[] = array(
'url' => sprintf($video_str, $video_id),
'thumbnail' => sprintf($thumbnail_str, $video_id),
'fullsize' => sprintf($fullsize_str, $video_id)
);
}
}
}
}
// return array of parsed videos
return $videos;
}
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