php - Youtube I.D parsing for new URL formats -

this question has been asked before , found this:

reg exp youtube link

but i'm looking different.

i need match youtube i.d compatible possible youtube link formats. not exclusively beginning youtube.com.

for example:

http://www.youtube.com/watch?v=-wtimtchwui

http://www.youtube.com/v/-wtimtchwui?version=3&autohide=1

http://youtu.be/-wtimtchwui

http://www.youtube.com/oembed?url=http%3a//www.youtube.com/watch?v%3d-wtimtchwui&format=json

http://s.ytimg.com/yt/favicon-wtimtchwui.ico

http://i2.ytimg.com/vi/-wtimtchwui/hqdefault.jpg

is there clever strategy can use match video i.d -wtimtchwui compatible these formats. i'm thinking character counting , matching = ? / . & characters.

i had deal php class wrote few weeks ago , ended regex matches kind of strings: or without url scheme, or without subdomain, youtube.com url strings, youtu.be url strings , dealing kind of parameter sorting. can check out at github or copy , paste code block below:

/**  *  check if input string valid youtube url  *  , try extract youtube video id it.  *  @author  stephan schmitz <eyecatchup@gmail.com>  *  @param   $url   string   string shall checked.  *  @return  mixed           returns youtube video id, or (boolean) false.  */ function parse_yturl($url) {     $pattern = '#^(?:https?://|//)?(?:www\.|m\.)?(?:youtu\.be/|youtube\.com/(?:embed/|v/|watch\?v=|watch\?.+&v=))([\w-]{11})(?![\w-])#';     preg_match($pattern, $url, $matches);     return (isset($matches[1])) ? $matches[1] : false; } 

test cases: https://3v4l.org/gedt0
javascript version: https://stackoverflow.com/a/10315969/624466

to explain regex, here's split version:

/**  *  check if input string valid youtube url  *  , try extract youtube video id it.  *  @author  stephan schmitz <eyecatchup@gmail.com>  *  @param   $url   string   string shall checked.  *  @return  mixed           returns youtube video id, or (boolean) false.  */ function parse_yturl($url) {     $pattern = '#^(?:https?://|//)?' # optional url scheme. either http, or https, or protocol-relative.              . '(?:www\.|m\.)?'      #  optional www or m subdomain.              . '(?:'                 #  group host alternatives:              .   'youtu\.be/'        #    either youtu.be,              .   '|youtube\.com/'    #    or youtube.com              .     '(?:'             #    group path alternatives:              .       'embed/'        #      either /embed/,              .       '|v/'           #      or /v/,              .       '|watch\?v='    #      or /watch?v=,              .       '|watch\?.+&v=' #      or /watch?other_param&v=              .     ')'               #    end path alternatives.              . ')'                   #  end host alternatives.              . '([\w-]{11})'         # 11 characters (length of youtube video ids).              . '(?![\w-])#';         # rejects if overlong id.     preg_match($pattern, $url, $matches);     return (isset($matches[1])) ? $matches[1] : false; }