Embed YouTube and Vimeo Videos Dynamically

Embed YouTube and Vimeo Videos Dynamically — a practical guide to Embed YouTube and Vimeo Videos Dynamically themes tutorial with clear examples you can reuse in real projects.

Create helper functions to detect YouTube and Vimeo URLs and automatically generate embeddable video links for your theme.

//video function start 
function video_url($url){
    $type = videoType($url);
    if($type == "youtube"){

    $vidUrlID = parse_youtube($url);

    $videoId = isset(explode("v=",$url)[1]) ? explode("v=",$url)[1] : null;
    if (strpos($videoId, '&') !== false){
        $vidUrlID = explode("&",$videoId)[0];
    }
    $vidUrl = "https://www.youtube.com/embed/".$vidUrlID;
  } else if($type == "vimeo"){ 
        $vidUrlID = parse_vimeo($url);
        $vidUrl = "https://player.vimeo.com/video/".$vidUrlID;        
  } else { 
    $vidUrl = $url;   
  }
  return $vidUrl;
}
function videoType($url) {
    if (strpos($url, 'youtube') > 0) {
        return 'youtube';
    } elseif (strpos($url, 'vimeo') > 0) {
    return 'vimeo';
    }
}
function parse_youtube($link){

    $regexstr = '~
        # Match Youtube link and embed code
        (?:                             # Group to match embed codes
      (?:<iframe [^>]*src=")?     # If iframe match up to first quote of src
            |(?:                        # Group to match if older embed
                (?:<object .*>)?        # Match opening Object tag
                (?:<param .</param>)    # Match all param tags
                (?:<embed [^>]*src=")?  # Match embed tag to the first quote of src
            )?                          # End older embed code group
        )?                              # End embed code groups
    
        (?:                             # Group youtube url
      https?://                 # Either http or https
            (?:[w]+.)*                # Optional subdomains
            (?:                         # Group host alternatives.
        youtu.be/              # Either youtu.be,
        | youtube.com          # or youtube.com
        | youtube-nocookie.com # or youtube-nocookie.com
            )                           # End Host Group
      (?:S*[^w-s])?           # Extra stuff up to VIDEO_ID
            ([w-]{11})                # $1: VIDEO_ID is numeric
            [^s]*                      # Not a space
        )                               # End group
        "?                              # Match end quote if part of src
        (?:[^>]*>)?                     # Match any extra stuff up to close brace
        (?:                             # Group to match last embed code
            </iframe>                   # Match the end of the iframe
            |</embed></object>          # or Match the end of the older embed
        )?                              # End Group of last bit of embed code
        ~ix';
        preg_match($regexstr, $link, $matches);
        return $matches[1];
    
}
function parse_vimeo($link){
  $regexstr = '~
    # Match Vimeo link and embed code
    (?:<iframe [^>]*src=")?     # If iframe match up to first quote of src
    (?:                         # Group vimeo url
      https?://             # Either http or https
      (?:[w]+.)*            # Optional subdomains
      vimeo.com              # Match vimeo.com
      (?:[/w]*/videos?)?   # Optional video sub directory this handles groups links also
      /                      # Slash before Id
      ([0-9]+)                # $1: VIDEO_ID is numeric
      [^s]*                  # Not a space
    )                           # End group
    "?                          # Match end quote if part of src
    (?:[^>]*></iframe>)?        # Match the end of the iframe
    (?:<p>.*</p>)?              # Match any title information stuff
    ~ix';

  preg_match($regexstr, $link, $matches);

  return $matches[1];
}