regex101: PCRE2 (PHP) Match Workspace

^start of line

Non-Capturing Group(?:(?:$?(?:00|\+)([1-4]\d\d|[1-9]\d*)$?)[\-\.\ \\\/]?)?

?repeats the group contents below at most once:

Non-Capturing Group(?:$?(?:00|\+)([1-4]\d\d|[1-9]\d*)$?)

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

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

1st Alternative00

00the literal text 00

2nd Alternative\+

\+the literal + (43₁₀ / 53₈ / 2B₁₆)

Group 1([1-4]\d\d|[1-9]\d*)

1st Alternative[1-4]\d\d

Character Class[1-4]

1-4one character from 1 (49₁₀) to 4 (52₁₀)

\da digit

2nd Alternative[1-9]\d*

Character Class[1-9]

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

\d*a digit, repeated any number of times

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

Character Class[\-\.\ \\\/]?

?matches at most one character from the set below:

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\ the literal (32₁₀ / 40₈ / 20₁₆)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 2((?:$?\d{1,}$?[\-\.\ \\\/]?){0,})

Non-Capturing Group(?:$?\d{1,}$?[\-\.\ \\\/]?){0,}

{0,}repeats the group contents below any number of times:

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

\d{1,}a digit, repeated at least once

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

Character Class[\-\.\ \\\/]?

?matches at most one character from the set below:

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\ the literal (32₁₀ / 40₈ / 20₁₆)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Non-Capturing Group(?:[\-\.\ \\\/]?(?:#|ext\.?|extension|x)[\-\.\ \\\/]?(\d+))?

?repeats the group contents below at most once:

Character Class[\-\.\ \\\/]?

?matches at most one character from the set below:

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\ the literal (32₁₀ / 40₈ / 20₁₆)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Non-Capturing Group(?:#|ext\.?|extension|x)

1st Alternative#

#the literal # (35₁₀ / 43₈ / 23₁₆)

2nd Alternativeext\.?

extthe literal text ext (case insensitive)

\.?optionally matches the literal . (46₁₀ / 56₈ / 2E₁₆)

3rd Alternativeextension

extensionthe literal text extension (case insensitive)

4th Alternativex

xthe literal x (120₁₀ / 170₈ / 78₁₆) (case insensitive)

Character Class[\-\.\ \\\/]?

?matches at most one character from the set below:

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\ the literal (32₁₀ / 40₈ / 20₁₆)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 3(\d+)

\d+a digit, repeated at least once

$end of line

Global pattern flags

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

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

^(?:(?:\(?(?:00|\+)([1-4]\d\d|[1-9]\d*)\)?)[\-\.\ \\\/]?)?((?:\(?\d{1,}\)?[\-\.\ \\\/]?){0,})(?:[\-\.\ \\\/]?(?:#|ext\.?|extension|x)[\-\.\ \\\/]?(\d+))?$

Regular Expressions 101

Regular Expression

Unit Tests