Regular Expressions 101

1st Alternative^0

^start of line

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

2nd Alternative[^\na-zA-Z0-9+]+

Negated Character Class[^\na-zA-Z0-9+]+

+matches at least one character outside the set below:

\na line-feed (newline) character (ASCII 10)

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

0-9one character from 0 (48₁₀) to 9 (57₁₀)

+the literal + (43₁₀ / 53₈ / 2B₁₆)

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|[^\na-zA-Z0-9+]+

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