Regular Expressions 101

Pro

^start of line

Character Class[(]?

?matches at most one character from the set below:

(the literal ( (40₁₀ / 50₈ / 28₁₆)

Character Class[0-9]{3}

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

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

Character Class[)]?

?matches at most one character from the set below:

)the literal ) (41₁₀ / 51₈ / 29₁₆)

Character Class[ ,-]?

?matches at most one character from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

-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)

Character Class[ ,-]?

?matches at most one character from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Character Class[0-9]{4}

{4}matches exactly 4 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.

25 tokens

^[(]?[0-9]{3}[)]?[ ,-]?[0-9]{3}[ ,-]?[0-9]{4}$

New

909-999-9999
909 999 9999
(909) 999-9999
(909) 999 9999
999 999 9999
9999999999