regex101: PCRE2 (PHP) Match Workspace

1st Alternative[^w.\:\/]+[a-zA-Z\.]?\.[a-zA-Z]{1,3}(\.[a-zA-Z]{1,3})?(\.[a-zA-Z]{0,3})?

Negated Character Class[^w.\:\/]+

+matches at least one character outside the set below:

wthe literal w (119₁₀ / 167₈ / 77₁₆) (case sensitive)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\:the literal : (58₁₀ / 72₈ / 3A₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Character Class[a-zA-Z\.]?

?matches at most one character from the set below:

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

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

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[a-zA-Z]{1,3}

{1,3}matches between 1 and 3 characters from the set below:

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

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

Group 1(\.[a-zA-Z]{1,3})?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[a-zA-Z]{1,3}

{1,3}matches between 1 and 3 characters from the set below:

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

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

Group 2(\.[a-zA-Z]{0,3})?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[a-zA-Z]{0,3}

{0,3}matches between 0 and 3 characters from the set below:

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

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

2nd Alternative[w]{1,2}[^w.]+\.[a-zA-Z]{1,3}(\.[a-zA-Z]{1,3})?

Character Class[w]{1,2}

{1,2}matches between 1 and 2 characters from the set below:

wthe literal w (119₁₀ / 167₈ / 77₁₆) (case sensitive)

Negated Character Class[^w.]+

+matches at least one character outside the set below:

wthe literal w (119₁₀ / 167₈ / 77₁₆) (case sensitive)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[a-zA-Z]{1,3}

{1,3}matches between 1 and 3 characters from the set below:

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

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

Group 3(\.[a-zA-Z]{1,3})?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[a-zA-Z]{1,3}

{1,3}matches between 1 and 3 characters from the set below:

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

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

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

[^w.\:\/]+[a-zA-Z\.]?\.[a-zA-Z]{1,3}(\.[a-zA-Z]{1,3})?(\.[a-zA-Z]{0,3})?|[w]{1,2}[^w.]+\.[a-zA-Z]{1,3}(\.[a-zA-Z]{1,3})?

Unit Tests

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