Regular Expressions 101

Non-Capturing Group(?:[\r\t\f\v ]*)

Character Class[\r\t\f\v ]*

*matches any number of characters from the set below:

\ra carriage return (ASCII 13)

\ta tab character (ASCII 9)

\fa form-feed character (ASCII 12)

\va vertical tab character (ASCII 11)

the literal (32₁₀ / 40₈ / 20₁₆)

Group 1($?[0-9]{3}$?[-.● ]?[0-9]{3}[-.● ]?[0-9]{4})

\(?optionally matches the literal ( (40₁₀ / 50₈ / 28₁₆)

Character Class[0-9]{3}

{3}matches exactly 3 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

\)?optionally matches the literal ) (41₁₀ / 51₈ / 29₁₆)

Character Class[-.● ]?

?matches at most one character from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

●the literal ● (9679₁₀ / 22717₈ / 25CF₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

Character Class[0-9]{3}

{3}matches exactly 3 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Character Class[-.● ]?

?matches at most one character from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

●the literal ● (9679₁₀ / 22717₈ / 25CF₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

Character Class[0-9]{4}

{4}matches exactly 4 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Non-Capturing Group(?:\s*)

\s*a Unicode whitespace character, repeated any number of times

Global pattern flags

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

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

No unit tests · Add a test to get started

Search reference

Regular Expression

(?:[\r\t\f\v ]*)(\(?[0-9]{3}\)?[-.● ]?[0-9]{3}[-.● ]?[0-9]{4})(?:\s*)

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