Regular Expressions 101

Explanation

Pro

1st Alternative_[0-9a-z]{24}(*SKIP)(*FAIL)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

Character Class[0-9a-z]{24}

{24}matches exactly 24 characters from the set below:

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

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

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

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

2nd Alternative[a-z]+(?:_[a-z]+)*

Character Class[a-z]+

+matches at least one character from the set below:

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

Non-Capturing Group(?:_[a-z]+)*

*repeats the group contents below any number of times:

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

Character Class[a-z]+

+matches at least one character from the set below:

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

Global pattern flags

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

Detailed match information will be displayed here automatically.

25 tokens

_[0-9a-z]{24}(*SKIP)(*FAIL)|[a-z]+(?:_[a-z]+)*

New

hello word some_stuff other_stuff_607eea770b6d00003d001579 something

hello word some_stuff other_stuff_607eea770b6d00003d001579 something