preg_replace bracket'（'[关闭]

I want to turn (05 May, 2012 in to 05 May, 2012 with preg_replace (basically removing brackets), but since I am useless with regex I have no idea how to do this

code attempts

preg_match('/[0-9]+(?:\.[0-9]*)?/', '(05 May, 2012', $matches);
if($matches){
   $match= $matches[0];
}else{
   $match= '';
}


$match = preg_replace('/[0-9]+(?:[0-9]*,)?/','$1','(05 May, 2012');

any help would be appreciated. thanks

if you're "useless" with regex use a simpler function then

$date = trim($date,"()");

$date = preg_replace('/\(([0-9]+ [A-Za-z]+\, [0-9]{4})/','$1',$date);