Problem with regular expression for some special parttern


I got a problem when I tried to find some characters with following code:

$str = "统计类型目前分为0日Q统计,月统q计及287年7统1计三7种,如需63自定义时间段,点1击此hell处进入自o定w义统or计d!页面。其他统计:客服工作量统计 | 本周服务统计EXCEL";
preg_match_all('/[\w\uFF10-\uFF19\uFF21-\uFF3A\uFF41-\uFF5A]/',$str,$match); //line 5

And I got error as below:

Warning: preg_match_all() [function.preg-match-all]: Compilation failed: PCRE does not  support \L, \l, \N, \U, or \u at offset 4 in E:\mycake\app\webroot\re.php on line 5

I'm not so familiar with reg expression and have no idea about this error.How can I fix this?Thanks.