regex101: PCRE (Legacy) Match Workspace

^start of line

Negated Character Class[^- ']

-the literal - (45₁₀ / 55₈ / 2D₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

Positive Lookahead(?=(?![A-Z]?[A-Z]))

Negative Lookahead(?![A-Z]?[A-Z])

Character Class[A-Z]?

?matches at most one character from the set below:

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Character Class[A-Z]

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Positive Lookahead(?=(?![a-z]+[A-Z]))

Negative Lookahead(?![a-z]+[A-Z])

Character Class[a-z]+

+matches at least one character from the set below:

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

Character Class[A-Z]

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Positive Lookahead(?=(?!.*[A-Z][A-Z]))

Negative Lookahead(?!.*[A-Z][A-Z])

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

Character Class[A-Z]

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Character Class[A-Z]

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Positive Lookahead(?=(?!.*[- '][- '.]))

Negative Lookahead(?!.*[- '][- '.])

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

Character Class[- ']

-the literal - (45₁₀ / 55₈ / 2D₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

Character Class[- '.]

-the literal - (45₁₀ / 55₈ / 2D₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

Positive Lookahead(?=(?!.*[.][-'.]))

Negative Lookahead(?!.*[.][-'.])

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

Character Class[.]

.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[-'.]

-the literal - (45₁₀ / 55₈ / 2D₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[A-Za-z- '.]{2,}

{2,}matches at least 2 characters from the set below:

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

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

-the literal - (45₁₀ / 55₈ / 2D₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

$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

Search reference

Regular Expression

^[^- '](?=(?![A-Z]?[A-Z]))(?=(?![a-z]+[A-Z]))(?=(?!.*[A-Z][A-Z]))(?=(?!.*[- '][- '.]))(?=(?!.*[.][-'.]))[A-Za-z- '.]{2,}$

Unit Tests

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