MySafeInfo

Regex Tokens

Technology 52 records updated 2026-07-19

Regex Tokens, with token, meaning, example, and category.

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First 25 of 52 records. Click a column to sort these rows.

ID Token Meaning Example Category
1 . Matches any character except line terminators a.c Character class
2 \d Matches any digit from 0 to 9 \d\d Character class
3 \D Matches any character that is not a digit \D+ Character class
4 \w Matches any letter, digit, or underscore \w+ Character class
5 \W Matches any character that is not a word character \W Character class
6 \s Matches any whitespace character \s+ Character class
7 \S Matches any character that is not whitespace \S+ Character class
8 [abc] Matches any one of the characters a, b, or c [abc] Character class
9 [^abc] Matches any character that is not a, b, or c [^abc] Character class
10 [a-z] Matches any character in the range a to z [a-z] Character class
11 [A-Z] Matches any uppercase letter from A to Z [A-Z] Character class
12 [0-9] Matches any digit in the range 0 to 9 [0-9] Character class
13 ^ Matches the start of the input or line ^abc Anchor
14 $ Matches the end of the input or line abc$ Anchor
15 \b Matches a word boundary position \bword\b Anchor
16 \B Matches a position that is not a word boundary \Bword Anchor
17 * Matches the preceding item zero or more times a* Quantifier
18 + Matches the preceding item one or more times a+ Quantifier
19 ? Matches the preceding item zero or one time a? Quantifier
20 {n} Matches the preceding item exactly n times a{3} Quantifier
21 {n,} Matches the preceding item at least n times a{2,} Quantifier
22 {n,m} Matches the preceding item from n to m times a{2,4} Quantifier
23 *? Matches zero or more times, as few as possible a*? Quantifier
24 +? Matches one or more times, as few as possible a+? Quantifier
25 ?? Matches zero or one time, as few as possible a?? Quantifier

Notes