Check & Parse YouTube & Vimeo Video IDs

video.php

<?php

/*
 *  Check if URL is YouTube
 */
function _is_youtube($url)
{
    return (preg_match('/youtu\.be/i', $url) || preg_match('/youtube\.com\/watch/i', $url));
}

/*
 * Check if URL is Vimeo
 */

function _is_vimeo($url)
{
    return (preg_match('/vimeo\.com/i', $url));
}

/*
 *  Get the YouTube Video ID from a URL
 */
function  _youtube_video_id($url)
{
    if(_is_youtube($url))
    {
        $pattern = '/^.*((youtu.be\/)|(v\/)|(\/u\/\w\/)|(embed\/)|(watch\?))\??v?=?([^#\&\?]*).*/';
        preg_match($pattern, $url, $matches);
        if (count($matches) && strlen($matches[7]) == 11)
        {
            return $matches[7];
        }
    }

    return '';
}

/*
 *  Get the Vimeo Video ID from a URL
 */
function _vimeo_video_id($url)
{
    if(_is_vimeo($url))
    {
        $pattern = '/\/\/(www\.)?vimeo.com\/(\d+)($|\/)/';
        preg_match($pattern, $url, $matches);
        if (count($matches))
        {
            return $matches[2];
        }
    }

    return '';
}