Regular Expressions 101

Pro

anchorthe literal text anchor (case sensitive)

.{,5}any Unicode character (except for line terminators), repeated between 0 and 5 times

test:"the literal text test:" (case sensitive)

Negative Lookahead(?!\.?")

\.?optionally matches the literal . (46₁₀ / 56₈ / 2E₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

Group 1(\d*(?:\.\d*)?)

\d*a Unicode decimal digit, repeated any number of times

Non-Capturing Group(?:\.\d*)?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d*a Unicode decimal digit, repeated any number of times

"the literal " (34₁₀ / 42₈ / 22₁₆)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

anchor.{,5}test:"(?!\.?")(\d*(?:\.\d*)?)"

ahlkhsa-anchorawO&B6o77ooiynlhwlkfnbla,)9;}[test:""ajanchorkh,2Yio98vacpoi [p{7}]test:"2"*iuyanchorap07A(p)a test:""*^g8p9JiguanchorLI;ntest:"9.3"
"anchorLI;ntest:"1.""anchorLI;ntest:".05"
anchorLI;ntest:"."anchorLI;ntest:"1..01"anchorLI;ntest:""anchorLI;ntest:"127.0.0.1"