Get Youtube Video Id from HTML Code with PHP

PHP Regex to get youtube video ID?

Use parse_url() and parse_str().

(You can use regexes for just about anything, but they are very easy to make an error in, so if there are PHP functions specifically for what you are trying to accomplish, use those.)

parse_url takes a string and cuts it up into an array that has a bunch of info. You can work with this array, or you can specify the one item you want as a second argument. In this case we're interested in the query, which is PHP_URL_QUERY.

Now we have the query, which is v=C4kxS1ksqtw&feature=relate, but we only want the part after v=. For this we turn to parse_str which basically works like GET on a string. It takes a string and creates the variables specified in the string. In this case $v and $feature is created. We're only interested in $v.

To be safe, you don't want to just store all the variables from the parse_url in your namespace (see mellowsoon's comment). Instead store the variables as elements of an array, so that you have control over what variables you are storing, and you cannot accidentally overwrite an existing variable.

Putting everything together, we have:

<?php
$url = "http://www.youtube.com/watch?v=C4kxS1ksqtw&feature=relate";
parse_str( parse_url( $url, PHP_URL_QUERY ), $my_array_of_vars );
echo $my_array_of_vars['v'];    
  // Output: C4kxS1ksqtw
?> 

Working example

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Edit:

hehe - thanks Charles. That made me laugh, I've never seen the Zawinski quote before:

Some people, when confronted with a problem, think ‘I know, I’ll use regular expressions.’ Now they have two problems.
– Jamie Zawinski

Get Youtube Video ID from html code with PHP

Brazenly stolen from htmlpurifier's youtube plugin:

preg_match('#<object[^>]+>.+?http://www.youtube.com/v/([A-Za-z0-9\-_]+).+?</object>#s', $markup, $matches);
var_dump($matches[1]);

Get YouTube video title with video ID in PHP

Use the YouTube API v3 and the list method, sending in the ID as a parameter and you will get information about that specific video, https://developers.google.com/youtube/v3/docs/videos/list#id.

GET https://www.googleapis.com/youtube/v3/videos

With the id parameter

string

The id parameter specifies a comma-separated list of the YouTube video ID(s) for the resource(s) that are being retrieved. In a video resource, the id property specifies the video's ID.

In your case, with the PHP SDK, the example would be something like:

# Call the videos.list method to retrieve location details for each video.
$videosResponse = $youtube->videos->listVideos('snippet, recordingDetails', array(
'id' => $videoIds,
));

how can i get youtube video id with php referer?

Regex is probably your best method of choice.
There's a post here that should benefit you.

PHP Regex to get youtube video ID?

getting youtube video id the PHP

Like this:

$link = "http://www.youtube.com/watch?v=oHg5SJYRHA0";
$video_id = explode("?v=", $link);
$video_id = $video_id[1];

Here is universal solution:

$link = "http://www.youtube.com/watch?v=oHg5SJYRHA0&lololo";
$video_id = explode("?v=", $link); // For videos like http://www.youtube.com/watch?v=...
if (empty($video_id[1]))
    $video_id = explode("/v/", $link); // For videos like http://www.youtube.com/watch/v/..

$video_id = explode("&", $video_id[1]); // Deleting any other params
$video_id = $video_id[0];

Or just use this regex:

(\?v=|/v/)([-a-zA-Z0-9]+)

Youtube API - Extract video ID

Here is an example function that uses a regular expression to extract the youtube ID from a URL:

/**
 * get youtube video ID from URL
 *
 * @param string $url
 * @return string Youtube video id or FALSE if none found. 
 */
function youtube_id_from_url($url) {
    $pattern = 
        '%^# Match any youtube URL
        (?:https?://)?  # Optional scheme. Either http or https
        (?:www\.)?      # Optional www 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=
          )             # End path alternatives.
        )               # End host alternatives.
        ([\w-]{10,12})  # Allow 10-12 for 11 char youtube id.
        $%x'
        ;
    $result = preg_match($pattern, $url, $matches);
    if ($result) {
        return $matches[1];
    }
    return false;
}

echo youtube_id_from_url('http://youtu.be/NLqAF9hrVbY'); # NLqAF9hrVbY

It's an adoption of the answer from a similar question.

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It's not directly the API you're looking for but probably helpful. Youtube has an oembed service:

$url = 'http://youtu.be/NLqAF9hrVbY';
var_dump(json_decode(file_get_contents(sprintf('http://www.youtube.com/oembed?url=%s&format=json', urlencode($url)))));

Which provides some more meta-information about the URL:

object(stdClass)#1 (13) {
  ["provider_url"]=>
  string(23) "http://www.youtube.com/"
  ["title"]=>
  string(63) "Hang Gliding: 3 Flights in 8 Days at Northside Point of the Mtn"
  ["html"]=>
  string(411) "<object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/NLqAF9hrVbY?version=3"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/NLqAF9hrVbY?version=3" type="application/x-shockwave-flash" width="425" height="344" allowscriptaccess="always" allowfullscreen="true"></embed></object>"
  ["author_name"]=>
  string(11) "widgewunner"
  ["height"]=>
  int(344)
  ["thumbnail_width"]=>
  int(480)
  ["width"]=>
  int(425)
  ["version"]=>
  string(3) "1.0"
  ["author_url"]=>
  string(39) "http://www.youtube.com/user/widgewunner"
  ["provider_name"]=>
  string(7) "YouTube"
  ["thumbnail_url"]=>
  string(48) "http://i3.ytimg.com/vi/NLqAF9hrVbY/hqdefault.jpg"
  ["type"]=>
  string(5) "video"
  ["thumbnail_height"]=>
  int(360)
}

But the ID is not a direct part of the response. However it might contain the information you're looking for and it might be useful to validate the youtube URL.

Get youtube video id from html code

Ended with following

string = 'http://www.youtube.com/embed/Wa6CA3YqV2Q'

result =  string.split('/').last

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