Regular Expressions 101

Group 1([+]\d{1,2}|(00)\d{2,4}|\d{2})

1st Alternative[+]\d{1,2}

Character Class[+]

+the literal + (43₁₀ / 53₈ / 2B₁₆)

\d{1,2}a digit, repeated between 1 and 2 times

2nd Alternative(00)\d{2,4}

Group 2(00)

00the literal text 00

\d{2,4}a digit, repeated between 2 and 4 times

3rd Alternative\d{2}

\d{2}a digit, repeated exactly 2 times

Group 3( [(]\d{1,3}[)])?

?repeats the group contents below at most once:

the literal (32₁₀ / 40₈ / 20₁₆)

Character Class[(]

(the literal ( (40₁₀ / 50₈ / 28₁₆)

\d{1,3}a digit, repeated between 1 and 3 times

Character Class[)]

)the literal ) (41₁₀ / 51₈ / 29₁₆)

Character Class[-. \/]?

?matches at most one character from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\d{2,6}?a digit, repeated between 2 and 6 times

Character Class[-. \/]?

?matches at most one character from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\d{2,15}a digit, repeated between 2 and 15 times

Group 4([-. \/]{1,3}\d{1,5}){0,4}

{0,4}repeats the group contents below between 0 and 4 times:

Character Class[-. \/]{1,3}

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

-the literal - (45₁₀ / 55₈ / 2D₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\d{1,5}a digit, repeated between 1 and 5 times

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

s modifier: single line. Allows a dot to match line terminators

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25 tokens

Regular Expression

([+]\d{1,2}|(00)\d{2,4}|\d{2})( [(]\d{1,3}[)])?[-. \/]?\d{2,6}?[-. \/]?\d{2,15}([-. \/]{1,3}\d{1,5}){0,4}

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