[筆記]Regular Expression要跳脫的字元

23 Dec 2006, 11:38am
電腦
by lachesis

每次忘記都要問google大神，還是做個筆記好了。

必須用反斜線跳脫的RE專用字元有:

. * + ? | ^ $ \ [ ] { } <> ( )

過濾某些ascii範圍可以這樣下:
$regPattern = “[\x00-\x40\\x5B-\x60\\x7B-\x7F\xA1\x40-\xA3\x43\xA3\xC0-\xA3\xFF]“;
//過濾特殊字元和全形和數字

Predefined Charactor Classes

`.`	Any character (may or may not match line terminators)
`\d`	A digit: `[0-9]`
`\D`	A non-digit: `[^0-9]`
`\s`	A whitespace character: `[ \t\n\x0B\f\r]`
`\S`	A non-whitespace character: `[^\s]`
`\w`	A word character: `[a-zA-Z_0-9]`
`\W`	A non-word character: `[^\w]`

資料整理不錯的網頁:

http://en.wikipedia.org/wiki/Regular_expression

← ばか鍋を食べてみた。東京歸來 →

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