Regular Expressions 101

^start of line

Non-Capturing Group(?:$\+?[0-9]{2}$)?

?repeats the group contents below at most once:

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

\+?optionally matches the literal + (43₁₀ / 53₈ / 2B₁₆)

Character Class[0-9]{2}

{2}matches exactly 2 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

Character Class[ .-]?

?matches at most one character from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Character Class[0-9]{3}

{3}matches exactly 3 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Group 1([ .-]?)

Character Class[ .-]?

?matches at most one character from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Character Class[0-9]{3}

{3}matches exactly 3 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

\1the text saved by group 1

Character Class[0-9]{1,3}

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

0-9one character from 0 (48₁₀) to 9 (57₁₀)

$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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

^(?:\(\+?[0-9]{2}\))?[ .-]?[0-9]{3}([ .-]?)[0-9]{3}\1[0-9]{1,3}$

New

555333222
555 333 222
(11)555333222
(11)555 333 222
(+11)555333222