Regular Expressions 101

Pro

1st AlternativeT\d{4}/\d{4}(*SKIP)(*F)

Tthe literal T (84₁₀ / 124₈ / 54₁₆) (case sensitive)

\d{4}a digit, repeated exactly 4 times

/the literal / (47₁₀ / 57₈ / 2F₁₆)

\d{4}a digit, repeated exactly 4 times

(*SKIP)acts like (*PRUNE), but the next unanchored match attempt starts where (*SKIP) was reached instead of at the next subject character

(*F)forces the current match attempt to fail at this position

2nd Alternative(\d{4})(A|B)?(C|D)?

Group 1(\d{4})

\d{4}a digit, repeated exactly 4 times

Group 2(A|B)?

?repeats the group contents below at most once:

1st AlternativeA

Athe literal A (65₁₀ / 101₈ / 41₁₆) (case sensitive)

2nd AlternativeB

Bthe literal B (66₁₀ / 102₈ / 42₁₆) (case sensitive)

Group 3(C|D)?

?repeats the group contents below at most once:

1st AlternativeC

Cthe literal C (67₁₀ / 103₈ / 43₁₆) (case sensitive)

2nd AlternativeD

Dthe literal D (68₁₀ / 104₈ / 44₁₆) (case sensitive)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

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25 tokens

T\d{4}/\d{4}(*SKIP)(*F)|(\d{4})(A|B)?(C|D)?

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