$re = '/\[\s+(\S+)\s+\((.*)\)\s+IN\s+\'(.*)\'\s+of type\s+\'(.*)\'\s+\]/';
$str = '[ condition12 (BRAND) IN \'Beats by Dr. Dre & D\\\'Silva of type Band\' of type \'IDENTIFIER_STRING\' ]';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($matches);
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php