Regular Expressions 101

^start of line

Character Class[3469]*

*matches any number of characters from the set below:

3the literal 3 (51₁₀ / 63₈ / 33₁₆)

4the literal 4 (52₁₀ / 64₈ / 34₁₆)

6the literal 6 (54₁₀ / 66₈ / 36₁₆)

9the literal 9 (57₁₀ / 71₈ / 39₁₆)

Group 1(333|444|666|999)

1st Alternative333

333the literal text 333

2nd Alternative444

444the literal text 444

3rd Alternative666

666the literal text 666

4th Alternative999

999the literal text 999

Character Class[3469]*

*matches any number of characters from the set below:

3the literal 3 (51₁₀ / 63₈ / 33₁₆)

4the literal 4 (52₁₀ / 64₈ / 34₁₆)

6the literal 6 (54₁₀ / 66₈ / 36₁₆)

9the literal 9 (57₁₀ / 71₈ / 39₁₆)

$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.

27 tokens

Regular Expression

^[3469]*(333|444|666|999)[3469]*$

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