Regular Expressions 101

Explanation

Pro

Character Class[a-z]

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

\d{2,4}a digit, repeated between 2 and 4 times

Non-Capturing Group(?:-[a-z]\d{2,4})?

?repeats the group contents below at most once:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Character Class[a-z]

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

\d{2,4}a digit, repeated between 2 and 4 times

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

?repeats the group contents below at most once:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Character Class[a-z]

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

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

[a-z]\d{2,4}(?:-[a-z]\d{2,4})?(?:-[a-z])?

New

/s1600/
/s1600-c/
/w80-h50/
/w300-h480-c/
/w80/
/w80-c/
/h50/
/h50-c/