Regular Expressions 101

^start of line

Group 1(409[0-6]|(40[0-8]|[1-3]\d\d|[1-9]\d|[1-9])\d|[1-9])

1st Alternative409[0-6]

409the literal text 409

Character Class[0-6]

0-6one character from 0 (48₁₀) to 6 (54₁₀)

2nd Alternative(40[0-8]|[1-3]\d\d|[1-9]\d|[1-9])\d

Group 2(40[0-8]|[1-3]\d\d|[1-9]\d|[1-9])

1st Alternative40[0-8]

40the literal text 40

Character Class[0-8]

0-8one character from 0 (48₁₀) to 8 (56₁₀)

2nd Alternative[1-3]\d\d

Character Class[1-3]

1-3one character from 1 (49₁₀) to 3 (51₁₀)

\da digit

3rd Alternative[1-9]\d

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

\da digit

4th Alternative[1-9]

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

\da digit

3rd Alternative[1-9]

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

$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.

25 tokens

Regular Expression

^(409[0-6]|(40[0-8]|[1-3]\d\d|[1-9]\d|[1-9])\d|[1-9])$

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