Get 11 characters to right of searched out string

What I have is a youtube link:
http://www.youtube.com/watch?v=xxxxxxxxxxx

I can detect http://www.youtube.com/watch?v= in a string, but how do I get the following 11 characters into a variable?

gracious!
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$link = 'http://www.youtube.com/watch?v=16afe495';
preg_match('%\?v=([^&]+)%', $link, $matches);
echo $matches[1];

PHP:

Totally untested but that should do it

 

Oh, thank you, I dont have the link in a variable though, I have to detect it out of a string.

 

try this

$page_source = '<retrived via CURL/fopen contain the HTML code of the website page>';
$flag = 'http://www.youtube.com/watch?v=';
$pos_start = strpos($page_source, $flag) + strlen($flag);
//The next 11 characters
$video_id = substr($page_source, $pos_start, 11);
		

PHP:

Hope it works well!

 

Well whatever the string is, put that instead of $link. It should still match it

 

It took some work, but xhanch's method works more constantly in the end.

 

Could also use

$link = 'http://www.youtube.com/watch?v=16asdfsdfsdfsdffe495';
preg_match('%watch\?v=(.{11})%', $link, $matches);
echo $matches[1];

PHP:

I'm guessing that my code matched more than 11 characters?

 

Yeah, it pulled some extra to the right.

 

yeah after looking I thought it might. The above that I provided should only pull 11

 

Well, if you are just after a single link, you should use my method. If you after multiple video links, you should regex as given by jay.

 

True, although you'd have to use preg_match_all instead