Regular Expressions 101

Pro

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

\ban ASCII word boundary

Group 1([0-9]{3})

Character Class[0-9]{3}

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

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

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

Group 2([0-9]{3})?

?repeats the group contents below at most once:

Character Class[0-9]{3}

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

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

Group 3([0-9]{4})

Character Class[0-9]{4}

{4}matches exactly 4 characters from the set below:

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

\ban ASCII word boundary

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.

26 tokens

\(?\b([0-9]{3})\)?([0-9]{3})?([0-9]{4})\b

New

1234567890
99999999999999
hello world1234567890
123-456-7890
0123456789
123.456.7890
123 456 7890
8054448445
3104448445
8187558094
310

1234567890
99999999999999
hello world1234567890
123-456-7890
0123456789
123.456.7890
123 456 7890
8054448445
3104448445
8187558094
310