Regular Expressions 101

^start of line

Group 1(\+{0,})

\+{0,}the literal + (43₁₀ / 53₈ / 2B₁₆) , repeated any number of times

Group 2(\d{0,})

\d{0,}a digit, repeated any number of times

Group 3([(]{1}\d{1,3}[)]{0,}){0,}

{0,}repeats the group contents below any number of times:

Character Class[(]{1}

{1}matches one character from the set below:

(the literal ( (40₁₀ / 50₈ / 28₁₆)

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

Character Class[)]{0,}

{0,}matches any number of characters from the set below:

)the literal ) (41₁₀ / 51₈ / 29₁₆)

Group 4(\s?\d+|\+\d{2,3}\s{1}\d+|\d+){1}

{1}repeats the group contents below exactly 1 time:

1st Alternative\s?\d+

\s?optionally matches any whitespace character

\d+a digit, repeated at least once

2nd Alternative\+\d{2,3}\s{1}\d+

\+the literal + (43₁₀ / 53₈ / 2B₁₆)

\d{2,3}a digit, repeated between 2 and 3 times

\s{1}any whitespace character, repeated exactly 1 time

\d+a digit, repeated at least once

3rd Alternative\d+

\d+a digit, repeated at least once

Character Class[\s|-]?

?matches at most one character from the set below:

\sany whitespace character

|the literal | (124₁₀ / 174₈ / 7C₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d+a digit, repeated at least once

Group 5([\s|-]?\d+){1,2}

{1,2}repeats the group contents below between 1 and 2 times:

Character Class[\s|-]?

?matches at most one character from the set below:

\sany whitespace character

|the literal | (124₁₀ / 174₈ / 7C₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d+a digit, repeated at least once

Group 6(\s){0,}

{0,}repeats the group contents below any number of times:

\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

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25 tokens

Regular Expression

^(\+{0,})(\d{0,})([(]{1}\d{1,3}[)]{0,}){0,}(\s?\d+|\+\d{2,3}\s{1}\d+|\d+){1}[\s|-]?\d+([\s|-]?\d+){1,2}(\s){0,}$

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