Regular Expressions 101

^start of line

Group 1(\+[0-9]{2}[.\-\s]?|00[.\-\s]?[0-9]{2}|0)

1st Alternative\+[0-9]{2}[.\-\s]?

\+the literal + (43₁₀ / 53₈ / 2B₁₆)

Character Class[0-9]{2}

{2}matches exactly 2 characters from the set below:

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

Character Class[.\-\s]?

?matches at most one character from the set below:

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

\sany whitespace character

2nd Alternative00[.\-\s]?[0-9]{2}

00the literal text 00

Character Class[.\-\s]?

?matches at most one character from the set below:

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

\sany whitespace character

Character Class[0-9]{2}

{2}matches exactly 2 characters from the set below:

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

3rd Alternative0

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

Group 2([0-9]{1,3}[.\-\s]?(?:[0-9]{2}[.\-\s]?){4})

Character Class[0-9]{1,3}

{1,3}matches between 1 and 3 characters from the set below:

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

Character Class[.\-\s]?

?matches at most one character from the set below:

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

\sany whitespace character

Non-Capturing Group(?:[0-9]{2}[.\-\s]?){4}

{4}repeats the group contents below exactly 4 times:

Character Class[0-9]{2}

{2}matches exactly 2 characters from the set below:

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

Character Class[.\-\s]?

?matches at most one character from the set below:

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

\sany whitespace character

$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

No unit tests · Add a test to get started

Search reference

Regular Expression

^(\+[0-9]{2}[.\-\s]?|00[.\-\s]?[0-9]{2}|0)([0-9]{1,3}[.\-\s]?(?:[0-9]{2}[.\-\s]?){4})$

Unit Tests

There are no unit tests, click to add some.