Regular expression online code generation tool

Regular expression online code generation tool

1. Implement online custom regular expressions and convert them into codes in various languages

2. Online generation of custom regular expression code: regular expression generation Javascript script, regular expression PHP code, regular expression generation go code

Regular expressions generate Java code, regular expressions generate rb code, regular expressions generate Python code, regular expressions generate C# code online

Grammar reference:

. - All characters except newline characters.

^ - The beginning of the string.

$ - End of string.

\d,\w,\s - Matches numbers, characters, and spaces.

\D,\W,\S - Matches non-numbers, non-characters, and non-spaces.

[abc] - Matches one of the letters a, b, or c.

[a-z] - Matches a letter from a to z.

[^abc] - Matches any letter except a, b, or c.

aa|bb - Matches aa or bb.

? - 0 or 1 matches.

* - Matched 0 or more times.

+ - Match 1 or more times.

{n} - Match n times.

{n,} - Match n or more times.

{m,n} - At least m times and at most n matches.

(expr) - Capture expr subpattern, use it with 1.

(?:expr) - Ignore captured subpatterns.

(?=expr) - Forward lookahead mode expr.

(?!expr) - Negative lookahead mode expr.