regex101: Exercicio

^start of line

Group 1(Prefeitura|Pref\.|P\.)

1st AlternativePrefeitura

Prefeiturathe literal text Prefeitura (case sensitive)

2nd AlternativePref\.

Prefthe literal text Pref (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

3rd AlternativeP\.

Pthe literal P (80₁₀ / 120₈ / 50₁₆) (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\sany whitespace character

Group 2(Municipal\s?|Mun.\s?|M.\s?)?

?repeats the group contents below at most once:

1st AlternativeMunicipal\s?

Municipalthe literal text Municipal (case sensitive)

\s?optionally matches any whitespace character

2nd AlternativeMun.\s?

Munthe literal text Mun (case sensitive)

.any character (except for line terminators)

\s?optionally matches any whitespace character

3rd AlternativeM.\s?

Mthe literal M (77₁₀ / 115₈ / 4D₁₆) (case sensitive)

.any character (except for line terminators)

\s?optionally matches any whitespace character

Group 3(de\s)?

?repeats the group contents below at most once:

dethe literal text de (case sensitive)

\sany whitespace character

Group 4(S[aã]o\sPaulo|S.\sP.|S.\sPaulo|S.P.|SP)

1st AlternativeS[aã]o\sPaulo

Sthe literal S (83₁₀ / 123₈ / 53₁₆) (case sensitive)

Character Class[aã]

athe literal a (97₁₀ / 141₈ / 61₁₆) (case sensitive)

ãthe literal ã (227₁₀ / 343₈ / E3₁₆) (case sensitive)

othe literal o (111₁₀ / 157₈ / 6F₁₆) (case sensitive)

\sany whitespace character

Paulothe literal text Paulo (case sensitive)

2nd AlternativeS.\sP.

Sthe literal S (83₁₀ / 123₈ / 53₁₆) (case sensitive)

.any character (except for line terminators)

\sany whitespace character

Pthe literal P (80₁₀ / 120₈ / 50₁₆) (case sensitive)

.any character (except for line terminators)

3rd AlternativeS.\sPaulo

Sthe literal S (83₁₀ / 123₈ / 53₁₆) (case sensitive)

.any character (except for line terminators)

\sany whitespace character

Paulothe literal text Paulo (case sensitive)

4th AlternativeS.P.

Sthe literal S (83₁₀ / 123₈ / 53₁₆) (case sensitive)

.any character (except for line terminators)

Pthe literal P (80₁₀ / 120₈ / 50₁₆) (case sensitive)

.any character (except for line terminators)

5th AlternativeSP

SPthe literal text SP (case sensitive)

$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

x modifier: extended. Ignores unescaped whitespace and comments outside character classes

Search reference

Regular Expression

^(Prefeitura|Pref\.|P\.)\s(Municipal\s?|Mun.\s?|M.\s?)?(de\s)?(S[aã]o\sPaulo|S.\sP.|S.\sPaulo|S.P.|SP)$

New

Prefeitura Municipal de São Paulo
Prefeitura Municipal de Sao Paulo
Prefeitura de São Paulo
Prefeitura de Sao Paulo
Prefeitura Mun. de São Paulo
Pref. Mun. de São Paulo
Pref. Mun. de S. P.
Pref. de São Paulo
Pref. de S. Paulo
Pref. M. de São Paulo
P. M. de Sao Paulo
Prefeitura São Paulo
Pref. Mun. São Paulo
Pref. Mun. S. Paulo
Prefeitura de S.P.
Prefeitura de SP

Regular Expressions 101

Regular Expression

Extraction