Regular Expressions 101

^start of line

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

Character Class[0-9]

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

Non-Capturing Group(?:[- ]?[0-9]){9,11}

{9,11}repeats the group contents below between 9 and 11 times:

Character Class[- ]?

?matches at most one character from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

Character Class[0-9]

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.

Search reference

Regular Expression

^\+?[0-9](?:[- ]?[0-9]){9,11}$

+12 1234567890
+12 12 345 567 89
+12 123-455-6789
+9712345567