Optional RegEx Grouping Fails

[carpiediem]

This returns a result:

preg_match('/Results[\s\S]+?(?:<\/p)/', $this->rawText, $match);

 

and this matches the same text (plus the remainer of the rawText string):

preg_match('/Results[\s\S]+?/', $this->rawText, $match);

 

But, this doesn't give me a match at all:

preg_match('/Results[\s\S]+?(?:<\/p)?/', $this->rawText, $match);

 

Why isn't the question mark at the end working the way I expect it to?  Thanks.

[mikecampbell]

Hmm, works fine for me. Can you provide an example that matches in the first two cases but not the third?