Regular Expressions 101

Explanation

Pro

^start of line

Non-Capturing Group(?:(?#DDI)(?:\+|00)?(55)\s?)?

?repeats the group contents below at most once:

Comment: DDI

Non-Capturing Group(?:\+|00)?

?repeats the group contents below at most once:

1st Alternative\+

\+the literal + (43₁₀ / 53₈ / 2B₁₆)

2nd Alternative00

00the literal text 00

Group 1(55)

55the literal text 55

\s?optionally matches any whitespace character

Non-Capturing Group(?:(?#DDD)$?([1-9][0-9])$?\s?)

Comment: DDD

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

Group 2([1-9][0-9])

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

Character Class[0-9]

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

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

\s?optionally matches any whitespace character

Non-Capturing Group(?:(?#Telefone)((?:9\d|[2-9])\d{3})\-?(\d{4}))

Comment: Telefone

Group 3((?:9\d|[2-9])\d{3})

Non-Capturing Group(?:9\d|[2-9])

1st Alternative9\d

9the literal 9 (57₁₀ / 71₈ / 39₁₆)

\da digit

2nd Alternative[2-9]

Character Class[2-9]

2-9one character from 2 (50₁₀) to 9 (57₁₀)

\d{3}a digit, repeated exactly 3 times

\-?optionally matches the literal - (45₁₀ / 55₈ / 2D₁₆)

Group 4(\d{4})

\d{4}a digit, repeated exactly 4 times

$end of line

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

Unit Test Summary

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Quick Reference

25 tokens

Regular Expression

^(?:(?#DDI)(?:\+|00)?(55)\s?)?(?:(?#DDD)\(?([1-9][0-9])\)?\s?)(?:(?#Telefone)((?:9\d|[2-9])\d{3})\-?(\d{4}))$

Unit Tests

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