preg match all - regex multiple parentheses -

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$str = "<p>(a)(3) asdf (10) asdf</p>";

trying pull second set of parentheses using php preg_match_all

very big doc i'm parsing, have this:

preg_match_all("=(?:<p[^>]*>|<p[^>]*>note|<i>|</i>)\((.*)\)=siu", $str, $matches);

pulling things fine:

<p>(a) <p>note(a) <i>(a) </i>(a)

all returning (a)

i'd search time see this: <p>(a)(3)

so need second paren , value returned (3)

and not want other paren + value (a) or (10)

how this?

preg_match_all("=(?:<p[^>]*>(:?note)?|</?i>)\((.*)\)(?:\((.*)\))?=siu", $str, $matches);

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