Problem with regular expression for some special parttern - php

Question

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,$match); //line 5
print_r($match);
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.

Answer 1

The problem is, that the PCRE regular expression engine does not understand the \uXXXX-syntax to denote characters via their unicode codepoints. Instead the PCRE engine uses a \x{XXXX}-syntax combined with the u-modifier:
preg_match_all('/[\w\x{FF10}-\x{FF19}\x{FF21}-\x{FF3A}\x{FF41}-\x{FF5A}]/u',$str,$match);
print_r($match);
See my answer here for some more information.
EDIT:
$str = "统计类型目前分为０日Q统计,月统q计及287年7统1计三7种,如需63自定义时间段,点1击此hell处进入自o定w义统or计d!页面。其他统计：客服工作量统计 | 本周服务统计EXCEL";
preg_match_all('/[\w\x{FF10}-\x{FF19}\x{FF21}-\x{FF3A}\x{FF41}-\x{FF5A}]/u',$str,$match);
// ^
// |
print_r($match);
/* Array
(
[0] => Array
(
[0] => ０
[1] => Q
[2] => q
[3] => 2
[4] => 8
[5] => 7
[6] => 7
[7] => 1
[8] => 7
[9] => 6
[10] => 3
[11] => 1
[12] => h
[13] => e
[14] => l
[15] => l
[16] => o
[17] => w
[18] => o
[19] => r
[20] => d
[21] => E
[22] => X
[23] => C
[24] => E
[25] => L
)
) */
You're sure, that you used the u-modifier (see arrow above)? If so, you'd have to check if your PHP supports th u-modifier at all (PHP > 4.1.0 on Unix and > 4.2.3 on Windows).