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function video_image($url){
	$image_url = parse_url($url);
    
	$ch = curl_init('http://vimeo.com/api/v2/video/'.substr($image_url['path'], 1).'.php');
	curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
	curl_setopt ($ch, CURLOPT_FOLLOWLOCATION, 1);
	$a = curl_exec($ch);
	$hash = unserialize($a);
	return $hash[0]["thumbnail_medium"];
}