RegExr Question - include only links that have the word 'thumb'

[bbmak]

Hi,
I have an array that I use Preg_match_all() to get all the urls from a string with the following RegExr.

!(href|src)="([^"]+)"!

I can get all the link with no problem. However, I want to add one more requirement to get a link that included a word 'thumb' with case ignore. Can any experts please help. I try and try, but still don't know how this complicated expression really work.

[Weedpacket]

If you've already done that, how about taking advantage of it, and using [man]preg_grep[/man] to search the results for any that contain "thumb"? You already know they're URLs.