Regular Expressions 101

Pro

^start of line

Negative Lookahead(?!0+$)

0+the literal 0 (48₁₀ / 60₈ / 30₁₆) , repeated at least once

$end of line

\d{1,7}a Unicode decimal digit, repeated between 1 and 7 times

$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

^(?!0+$)\d{1,7}$

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