Regular Expressions 101

1st Alternative(?:$\d{3}$*\s\d{3}-\d{4})

Non-Capturing Group(?:$\d{3}$*\s\d{3}-\d{4})

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

\d{3}a digit, repeated exactly 3 times

\)*the literal ) (41₁₀ / 51₈ / 29₁₆) , repeated any number of times

\sany whitespace character

\d{3}a digit, repeated exactly 3 times

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d{4}a digit, repeated exactly 4 times

2nd Alternative(?:\d{3}(?:-|\s*)\d{3}-\d{4})

Non-Capturing Group(?:\d{3}(?:-|\s*)\d{3}-\d{4})

\d{3}a digit, repeated exactly 3 times

Non-Capturing Group(?:-|\s*)

1st Alternative-

-the literal - (45₁₀ / 55₈ / 2D₁₆)

2nd Alternative\s*

\s*any whitespace character, repeated any number of times

\d{3}a digit, repeated exactly 3 times

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d{4}a digit, repeated exactly 4 times

3rd Alternative(?:\d{10})

Non-Capturing Group(?:\d{10})

\d{10}a digit, repeated exactly 10 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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(?:\(\d{3}\)*\s\d{3}-\d{4})|(?:\d{3}(?:-|\s*)\d{3}-\d{4})|(?:\d{10})

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