Regular Expressions 101

Group 1([0-9]{4})

Character Class[0-9]{4}

{4}matches exactly 4 characters from the set below:

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

/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 2([0-9]{1,2})

Character Class[0-9]{1,2}

{1,2}matches between 1 and 2 characters from the set below:

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

/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 3([0-9]{1,2})

Character Class[0-9]{1,2}

{1,2}matches between 1 and 2 characters from the set below:

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

/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 4([^/]+)

Negated Character Class[^/]+

+matches at least one character outside the set below:

/the literal / (47₁₀ / 57₈ / 2F₁₆)

Non-Capturing Group(?:/([0-9]+))?

?repeats the group contents below at most once:

/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 5([0-9]+)

Character Class[0-9]+

+matches at least one character from the set below:

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

Global pattern flags

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

([0-9]{4})/([0-9]{1,2})/([0-9]{1,2})/([^/]+)(?:/([0-9]+))?

New

https://www.statnews.com/2018/01/26/gottlieb-trump-davos/