Regular Expressions 101

Pro

^start of line

\d{6}a Unicode decimal digit, repeated exactly 6 times

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Non-Capturing Group(?:[1-9]|[1-9]0|\d[1-9])

1st Alternative[1-9]

Character Class[1-9]

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

2nd Alternative[1-9]0

Character Class[1-9]

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

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

3rd Alternative\d[1-9]

\da Unicode decimal digit

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

^\d{6}-(?:[1-9]|[1-9]0|\d[1-9])$

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