Regular Expressions 101

^start of line

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

Group 1([2-9][0-8][0-9])

Character Class[2-9]

2-9one character from 2 (50₁₀) to 9 (57₁₀)

Character Class[0-8]

0-8one character from 0 (48₁₀) to 8 (56₁₀)

Character Class[0-9]

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

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

^\(?([2-9][0-8][0-9])

New

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