Regular Expressions 101

Pro

(?mx)applies the following effective flags to the remainder of the pattern: gmx

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

x modifier: extended. Ignores unescaped whitespace and comments outside character classes

Non-Capturing Group(?:\+?$?\d{1,4}$?\ ?\.?\-?)+

+repeats the group contents below at least once:

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

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

\d{1,4}a digit, repeated between 1 and 4 times

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

\ ?optionally matches the literal (32₁₀ / 40₈ / 20₁₆)

\.?optionally matches the literal . (46₁₀ / 56₈ / 2E₁₆)

\-?optionally matches the literal - (45₁₀ / 55₈ / 2D₁₆)

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

(?mx)
(?:\+?\(?\d{1,4}\)?\ ?\.?\-?)+

123-456-5555
(123) 222-1234
123 555 5555
123.777.7979
+91 (123) 455-6000

123-456-5555
(123) 222-1234
123 555 5555
123.777.7979
+91 (123) 455-6000