Youtube I.D parsing for new URL formats

by

I had to deal with this for a PHP class I wrote a few weeks ago and ended up with a regex that matches any kind of strings: With or without URL scheme, with or without subdomain, youtube.com URL strings, youtu.be URL strings and dealing with all kind of parameter sorting. You can check it out at GitHub or simply copy and paste the code block below:

/**
 *  Check if input string is a valid YouTube URL
 *  and try to extract the YouTube Video ID from it.
 *  @author  Stephan Schmitz <[email protected]>
 *  @param   $url   string   The string that shall be checked.
 *  @return  mixed           Returns YouTube Video ID, or (boolean) false.
 */
function parse_yturl($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 the regex, here’s a split up version:

/**
 *  Check if input string is a valid YouTube URL
 *  and try to extract the YouTube Video ID from it.
 *  @author  Stephan Schmitz <[email protected]>
 *  @param   $url   string   The string that shall be checked.
 *  @return  mixed           Returns YouTube Video ID, or (boolean) false.
 */
function parse_yturl($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;
}

More Related Contents:

  1. How do I find all YouTube video ids in a string using a regex?
  2. parse youtube video id using preg_match [duplicate]
  3. RegEx pattern to get the YouTube video ID from any YouTube URL
  4. Turn Plain Text URLs into Active Links using PHP [closed]
  5. How to find value between commas
  6. How to validate an email address in PHP
  7. How to validate an Email in PHP?
  8. deny direct access to a folder and file by htaccess
  9. Convert plain text URLs into HTML hyperlinks in PHP
  10. Remove style attribute from HTML tags
  11. “vertical” regex matching in an ASCII “image”
  12. Regular expression pattern to match URL with or without http://www
  13. Match a^n b^n c^n (e.g. “aaabbbccc”) using regular expressions (PCRE)
  14. Automatic image format detection in PHP
  15. What Delimiter to use for preg_replace in PHP (replace working outside of PHP but not inside)
  16. Parsing CSS by regex
  17. Codeigniter Routes regex – using dashes in controller/method names
  18. Replace only first match using preg_replace [duplicate]
  19. Get the price of an item on Steam Community Market with PHP and Regex
  20. python format datetime with “st”, “nd”, “rd”, “th” (english ordinal suffix) like PHP’s “S”
  21. Laravel preg_match(): No ending delimiter ‘/’ found
  22. PHP regex – valid float number
  23. PCRE regular expression overlapping matches
  24. How to get Open Graph Protocol of a webpage by php?
  25. Count all HTML tags in page PHP
  26. How to remove numbers from a string with RegEx
  27. Function To Create Regex Matching a Number Range
  28. PHP Preg-Replace more than one underscore
  29. Replace all characters that aren’t letters and numbers with a hyphen [duplicate]
  30. Regex, get string value between two characters

Leave a Comment