youtube video id regex issue

[phpsycho]

I got this code..

$expr = '\(?:http://){0,1}(?:www.){0,1}youtube.com/watch\?.*?v=([^&[]++)[^[]*+/is';
$replacement = '${1}1,$3';
$string = preg_replace($expr, $replacement, $string);

I am not familiar with regex well enough to understand the problem here. the \ in the front of $expr and the /is at the end is causing this code not to work. No idea what I am supposed to have there instead. Been messing around with the code but can't figure out how to fix it.

 

Warning: preg_replace(): Delimiter must not be alphanumeric or backslash in /var/www/se1/includes/functions.php on line 74 Warning: preg_replace(): Delimiter must not be alphanumeric or backslash in /var/www/se1/includes/functions.php on line 74 Warning: preg_replace(): Delimiter must not be alphanumeric or backslash in /var/www/se1/includes/functions.php on line 74 Warning: preg_replace(): Delimiter must not be alphanumeric or backslash in /var/www/se1/includes/functions.php on line 74 Warning: preg_replace(): Delimiter must not be alphanumeric or backslash in /var/www/se1/includes/functions.php on line 74

[.josh]

$expr = '~(?:http://){0,1}(?:www.){0,1}youtube.com/watch\?.*?v=([^&[]++)[^[]*+~is';

[phpsycho]

I feel so dumb lol such a simple fix. thank you though, very much!

[phpsycho]

hmmm another problem..

I needed this to remove anything after the video id but once there is white space to stop. because right now basically I have the link and then I have text, the text is being removed and in another case the text is being inserted along with the video id.

[.josh]

How about you show example of actual content you are trying to make changes to (what is actually in $string), including a "before" and "after".

[phpsycho]

<?php
$string = "http://www.youtube.com/watch?v=4JipHEz53sU <br><br>testing youtube videos ^^";
$expr = '~(?:http://){0,1}(?:www.){0,1}youtube.com/watch\?.*?v=([^&[]++)[^[]*+~is';
$replacement = '<iframe width="475" height="300" src="http://www.youtube.com/embed/${1}" frameborder="0" allowfullscreen></iframe>'; //${1} = 4JipHEz53sU <br><br>testing youtube videos ^^ 
$string = preg_replace($expr, $replacement, $string);
?>

[.josh]

$expr = '~youtube\.com/watch(??:(?!v=|\s).)*)v=([-a-z0-9_]+)~i';

[phpsycho]

That works but its leaving the text there.. can it be totally removed?

[.josh]

ah okay

 

$expr = '~(?:http://)?(?:www\.)?youtube\.com/watch(??:(?!v=|\s).)*)v=([-a-z0-9_]+)~i';

 

[.josh]

that will also remove the http:// and www. but that stuff after the link... " <br><br>testing youtube videos ^^""  you're gonna have to explain what all that is about...no real easy way to get rid of arbitrary text like that...

[phpsycho]

You're going to shoot me lol I'm sorry, didn't explain it very well.

The text that is still being left is: &feature=related

so I want anything that comes after the video id v= to be removed. because there are different things that tend to come after the video id.

the text after &feature=related should be left alone. Just this code here that was supposed to remove the &feature=related, [^[]*]+ would remove everything including the text after the link which shouldn't be removed.

[.josh]

 

$expr = '~(?:http://)?(?:www\.)?youtube\.com/watch(??:(?!v=|\s).)*)v=([-a-z0-9_]+)[^ ]*~i';

[phpsycho]

That works perfectly! Thanks!