Regular Expressions 101

Pro

^start of string

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Character Class[\d]{0,3}

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

\da digit

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

Group 1($[\d]{0,3}$)?

?repeats the group contents below at most once:

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Character Class[\d]{0,3}

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

\da digit

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

Group 2($[\d]{0,4}$)?

?repeats the group contents below at most once:

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Character Class[\d]{0,4}

{0,4}matches between 0 and 4 characters from the set below:

\da digit

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

$end of string, or before its final line terminator

Detailed match information will be displayed here automatically.

25 tokens

^\([\d]{0,3}\)(\([\d]{0,3}\))?(\([\d]{0,4}\))?$

New

(153)(593)(9999)

(153)(593)(9999)