regex101: PCRE (Legacy) Match Workspace

Definition Group(?(DEFINE) (?# Definitions ) (?<valid_nameChars>[\p{L}\p{Nl}]) (?<valid_nonNameChars>[^\p{L}\p{Nl}\p{Zs}]) (?<valid_startFirstName>(?![a-z])[\p{L}']) (?<valid_upperChar>(?![a-z])\p{L}) (?<valid_nameSeparatorsSoft>[\p{Pd}']) (?<valid_nameSeparatorsHard>\p{Zs}) (?<valid_nameSeparators>(?&valid_nameSeparatorsSoft)|(?&valid_nameSeparatorsHard)) (?# Invalid combinations ) (?<invalid_startChar>^[\p{Zs}a-z]) (?<invalid_endChar>.*[^\p{L}\p{Nl}.\p{C}]$) (?<invalid_unaccompaniedSymbol>.*(?&valid_nameSeparatorsHard)(?&valid_nonNameChars)(?&valid_nameSeparatorsHard)) (?<invalid_overTwoUpper>(?:(?&valid_nameChars)*\p{Lu}){3}) (?<invalid>(?&invalid_startChar)|(?&invalid_endChar)|(?&invalid_unaccompaniedSymbol)|(?&invalid_overTwoUpper)) (?# Valid combinations ) (?<valid_name>(?:(?:(?&valid_nameChars)|(?&valid_nameSeparatorsSoft))*(?&valid_nameChars)+(?:(?&valid_nameChars)|(?&valid_nameSeparatorsSoft))*)+\.?) (?<valid_firstName>(?&valid_startFirstName)(?:\.|(?&valid_name)*)) (?<valid_multipleName>(?&valid_firstName)(?=.*(?&valid_nameSeparators)(?&valid_upperChar))(?:(?&valid_nameSeparatorsHard)(?&valid_name))+) (?<valid>(?&valid_multipleName)|(?&valid_firstName)) )

Comment: Definitions

Group valid_nameChars(?<valid_nameChars>[\p{L}\p{Nl}])

Character Class[\p{L}\p{Nl}]

\p{L}any Unicode letter

\p{Nl}a letterlike numeric character, such as a Roman numeral

Group valid_nonNameChars(?<valid_nonNameChars>[^\p{L}\p{Nl}\p{Zs}])

Negated Character Class[^\p{L}\p{Nl}\p{Zs}]

\p{L}any Unicode letter

\p{Nl}a letterlike numeric character, such as a Roman numeral

\p{Zs}a space separator with non-zero width

Group valid_startFirstName(?<valid_startFirstName>(?![a-z])[\p{L}'])

Negative Lookahead(?![a-z])

Character Class[a-z]

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

Character Class[\p{L}']

\p{L}any Unicode letter

'the literal ' (39₁₀ / 47₈ / 27₁₆)

Group valid_upperChar(?<valid_upperChar>(?![a-z])\p{L})

Negative Lookahead(?![a-z])

Character Class[a-z]

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

\p{L}any Unicode letter

Group valid_nameSeparatorsSoft(?<valid_nameSeparatorsSoft>[\p{Pd}'])

Character Class[\p{Pd}']

\p{Pd}a dash or hyphen punctuation mark

'the literal ' (39₁₀ / 47₈ / 27₁₆)

Group valid_nameSeparatorsHard(?<valid_nameSeparatorsHard>\p{Zs})

\p{Zs}a space separator with non-zero width

Group valid_nameSeparators(?<valid_nameSeparators>(?&valid_nameSeparatorsSoft)|(?&valid_nameSeparatorsHard))

1st Alternative(?&valid_nameSeparatorsSoft)

(?&valid_nameSeparatorsSoft)calls group valid_nameSeparatorsSoft as a subroutine

2nd Alternative(?&valid_nameSeparatorsHard)

(?&valid_nameSeparatorsHard)calls group valid_nameSeparatorsHard as a subroutine

Comment: Invalid combinations

Group invalid_startChar(?<invalid_startChar>^[\p{Zs}a-z])

^start of line

Character Class[\p{Zs}a-z]

\p{Zs}a space separator with non-zero width

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

Group invalid_endChar(?<invalid_endChar>.*[^\p{L}\p{Nl}.\p{C}]$)

.*any character (except for line terminators), repeated any number of times

Negated Character Class[^\p{L}\p{Nl}.\p{C}]

\p{L}any Unicode letter

\p{Nl}a letterlike numeric character, such as a Roman numeral

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\p{C}a control, format, surrogate, private-use, or unassigned code point

$end of line

Group invalid_unaccompaniedSymbol(?<invalid_unaccompaniedSymbol>.*(?&valid_nameSeparatorsHard)(?&valid_nonNameChars)(?&valid_nameSeparatorsHard))

.*any character (except for line terminators), repeated any number of times

(?&valid_nameSeparatorsHard)calls group valid_nameSeparatorsHard as a subroutine

(?&valid_nonNameChars)calls group valid_nonNameChars as a subroutine

(?&valid_nameSeparatorsHard)calls group valid_nameSeparatorsHard as a subroutine

Group invalid_overTwoUpper(?<invalid_overTwoUpper>(?:(?&valid_nameChars)*\p{Lu}){3})

Non-Capturing Group(?:(?&valid_nameChars)*\p{Lu}){3}

{3}repeats the group contents below exactly 3 times:

(?&valid_nameChars)*calls group valid_nameChars as a subroutine, repeated any number of times

\p{Lu}an uppercase letter

Group invalid(?<invalid>(?&invalid_startChar)|(?&invalid_endChar)|(?&invalid_unaccompaniedSymbol)|(?&invalid_overTwoUpper))

Comment: Valid combinations

Group valid_name(?<valid_name>(?:(?:(?&valid_nameChars)|(?&valid_nameSeparatorsSoft))*(?&valid_nameChars)+(?:(?&valid_nameChars)|(?&valid_nameSeparatorsSoft))*)+\.?)

Group valid_firstName(?<valid_firstName>(?&valid_startFirstName)(?:\.|(?&valid_name)*))

Group valid_multipleName(?<valid_multipleName>(?&valid_firstName)(?=.*(?&valid_nameSeparators)(?&valid_upperChar))(?:(?&valid_nameSeparatorsHard)(?&valid_name))+)

Group valid(?<valid>(?&valid_multipleName)|(?&valid_firstName))

^start of line

Negative Lookahead(?!(?&invalid))

(?&valid)calls group valid as a subroutine

$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

(?(DEFINE)
    (?# Definitions )
    (?<valid_nameChars>[\p{L}\p{Nl}])
    (?<valid_nonNameChars>[^\p{L}\p{Nl}\p{Zs}])
    (?<valid_startFirstName>(?![a-z])[\p{L}'])
    (?<valid_upperChar>(?![a-z])\p{L})
    (?<valid_nameSeparatorsSoft>[\p{Pd}'])
    (?<valid_nameSeparatorsHard>\p{Zs})
    (?<valid_nameSeparators>(?&valid_nameSeparatorsSoft)|(?&valid_nameSeparatorsHard))
    (?# Invalid combinations )
    (?<invalid_startChar>^[\p{Zs}a-z])
    (?<invalid_endChar>.*[^\p{L}\p{Nl}.\p{C}]$)
    (?<invalid_unaccompaniedSymbol>.*(?&valid_nameSeparatorsHard)(?&valid_nonNameChars)(?&valid_nameSeparatorsHard))
    (?<invalid_overTwoUpper>(?:(?&valid_nameChars)*\p{Lu}){3})
    (?<invalid>(?&invalid_startChar)|(?&invalid_endChar)|(?&invalid_unaccompaniedSymbol)|(?&invalid_overTwoUpper))
    (?# Valid combinations )
    (?<valid_name>(?:(?:(?&valid_nameChars)|(?&valid_nameSeparatorsSoft))*(?&valid_nameChars)+(?:(?&valid_nameChars)|(?&valid_nameSeparatorsSoft))*)+\.?)
    (?<valid_firstName>(?&valid_startFirstName)(?:\.|(?&valid_name)*))
    (?<valid_multipleName>(?&valid_firstName)(?=.*(?&valid_nameSeparators)(?&valid_upperChar))(?:(?&valid_nameSeparatorsHard)(?&valid_name))+)
    (?<valid>(?&valid_multipleName)|(?&valid_firstName))
)
^(?!(?&invalid))(?&valid)$

New

== 1NcOrrect N4M3S ==
CAPITAL LETTER
AlTeRnAtE LeTtEr
Natalia maria
Natalia aria
Natalia orea
Maria dornelas
Samuel eto'
Miguel lasagna
Antony1 de Home Ap*ril
Ap*ril Willians
Antony_ de Home Apr+il
Ant_ony de Home Apr#il
Antony@ de Ho@me Apr^il
Maria  Silva
Maria silva
maria Silva
 Maria Silva
Maria Silva 
Maria / Silva
Maria . Silva
John W8

==Correct Names==
Urxan Əbűlhəsənzadə
İsmət Jafarov
Şükür Hagverdiyev
Űmid Abdurrahimov
Ġerardo Seralta
Ċikku Paris
Hind ibn Sheik
Colop-U-Uichikin
Lażżru Role
Alaksiej Taraškievič
Petruso Husoǔski
Sumu-la-El
Valeh ßlÿsgÿroğlu
'Arab al-Rashayida
Tariq al-Hashimi
Nabeeh el-Mady
Tariq Al-Hashimi
Brian O'Conner
Maria da Silva
Maria Silva
Maria G. Silva
Maria McDuffy
Getúlio Dornelles Vargas
Maria das Flores
John Smith
John D'Largy
John Doe-Smith
John Doe Smith
Hector Sausage-Hausen
Mathias d'Arras
Martin Luther King Jr.
Ai Wong
Chao Chang
Alzbeta Bara
Marcos Assunção
Maria da Silva e Silva
Juscelino Kubitschek de Oliveira
Maria da Costa e Silva
Samuel Eto'o
María Antonieta de las Nieves
Eugène
Antòny de Homé April
àntony de Home ùpril
Antony de Home Aprìl
Pierre de l'Estache
Pierre de L'Estoile
Akihito
Nadine Schröder
Anna A. Møller
D. Pedro I
Pope Benedict XVI
Marsibil Ragnarsdóttir
Natanaël Morel
Isaac De la Croix
Jean-Michel Bozonnet
Qutaibah Mu'tazz Abadi
Rushd Jawna' Kassab
Khaldun Abdul-Qahhar Sabbag
'Awad Bashshar Asker
Al B. Zellweger
Gunnleif Snæ-Ulfsson
Käre Toresson
Sorli Ærnmundsson
Arnkel Øystæinsson
Ástríður Dórey
Åsmund Kåresson
Yahatti-Il
Ipqu-Annunitum
Nabu-zar-adan
Eskopas Cañaverri
Botolph of Langchester
Aelfhun the Cantrell
Fraco di Natale
Fraco Di Natale
Iván de Luca
Iván De Luca
Man'nah
Atabala Aüamusalü
Ramiz Ağasəfalu
Dadaş Aghakhanov
Fÿrxad Mübarizlı
Vaclaǔ Šupa
Yakiv Volacič
Flor Van Vaerenbergh
Flor van Vaerenbergh
Edwin van der Sar
Husein Ekmečić
Álvaro Guimarães Alencar
Phone U Yaza Arkar
Seocan MacGhille
X'wat'e Tlekadugovy
Albert-Jan Bootsveld
Maurits-jan Kuipers op den Kollenstaart
Elco ter Hoek
Robbert te Poele
Aad ten Have
'Ehu Kali
Ho'opa'a Loni
Aukanai'i Mahi'ai
Kalman ben Tal El
Żytomir Roszkowski
K'awai

==EXTRA== only if possible, strange ones
Maol-Moire Mac'IlleBhuidh
Tòmas MacIlleChruim
Aindreas MacIllEathain
Eanruig MacGilleBhreac
Peadar MacGilleDhonaghart
Maolmhuire MacGill-Eain
Eanruig MacGilleBhreac
Wim van 't Plasman

Regular Expressions 101

Regular Expression

Substitution