Regular Expressions 101

Pro

^start of line

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

Non-Capturing Group(?:00)?

?repeats the group contents below at most once:

00the literal text 00

\d{12}a digit, repeated exactly 12 times

Non-Capturing Group(?:#\d{2,5})?

?repeats the group contents below at most once:

#the literal # (35₁₀ / 43₈ / 23₁₆)

\d{2,5}a digit, repeated between 2 and 5 times

$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.

26 tokens

^\+?(?:00)?\d{12}(?:#\d{2,5})?$

New

+919986040933
00919986040933
+919986040933#12
+919986040933#123
+919986040933#1234
+919986040933#12345