preg_match_all returns matches that doesn't exist

[eddie_]

First time post, be easy on me...

 

I'm using preg_match_all to return an array with all the matches.  I know I'm missing something fundamental, but I either keep looking past it or am more screwy than I know.

 

Sample String

CC-BY-ND-NC

I'm using the following code

preg_match_all("/cc|creative commons|copyright|by|sa|nc|nd/i",$exifmeta['copyright'],$cmeta)

I would expect to see

Array
(
    [0] => Array
        (
            [0] => CC
            [1] => BY
            [2] => ND
            [3] => NC
        )

)

What I get is

Array
(
    [0] => Array
        (
            [0] => CC
            [1] => BY
            [2] => ND
            [3] => NC
            [4] => sa
        )

)

[Ch0cu3r]

Are you sure that is the exact string stored in   $exifmeta['copyright']

 

What does var_dump($exifmeta['copyright']) show?

[eddie_]

Well, I feel a little sheepish  It appears that I have a url in the string that just happens to have "SA" in it.  

string(30) "CC-BY-NC-ND https://urlwithSAinit.com"

How can I better wright the regex to take that into consideration?

[Ch0cu3r]

Maybe use a word boundary?

 

/\b(cc|creative commons|copyright|by|sa|nc|nd)\b/i

[Regexer]

use \s instead of pure space symbol