Originariamente inviato da badaze
codice:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>
<head>
<title>Untitled</title>
</head>
<body>
<? 
$stringa = "Ciao amico sono Andrea blablabla  e sugnu catanisi ";
$espressione = "|\[[Bb]\](.+)\[\/[Bb]\]|U";
preg_match_all($espressione, $stringa, $array);
print "<pre>";
print_r($array);
print "</pre>";
 ?>
</body>
</html>
PCRE?