regex101: PCRE (Legacy) Substitution Workspace

Explanation

Pro

^start of line

Character Class[a-f0-9]+

+matches at least one character from the set below:

a-fone character from a (97₁₀) to f (102₁₀) (case sensitive)

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

Non-Capturing Group(?:-[a-f0-9]+)+

+repeats the group contents below at least once:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Character Class[a-f0-9]+

+matches at least one character from the set below:

a-fone character from a (97₁₀) to f (102₁₀) (case sensitive)

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

-the literal - (45₁₀ / 55₈ / 2D₁₆)

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

Quick Reference

25 tokens

Regular Expression

^[a-f0-9]+(?:-[a-f0-9]+)+-

New

8ae0676c-aba2-4cf2-9391-91096a247672-paris-chambre-double-classique-avec-option-petit-dejeuner-a-lhotel-trianon-rive-gauche-4-pour-2-personnes.html  
4-f707b0fe-31cb-4507-b7b3-7b91695bff9c-paris-chambre-double-standard-avec-petit-dejeuner-et-acces-spa-pour-2-personnes-a-lhotel-le-mareuil.html

Substitution

/

8ae0676c-aba2-4cf2-9391-91096a247672-paris-chambre-double-classique-avec-option-petit-dejeuner-a-lhotel-trianon-rive-gauche-4-pour-2-personnes.html  
4-f707b0fe-31cb-4507-b7b3-7b91695bff9c-paris-chambre-double-standard-avec-petit-dejeuner-et-acces-spa-pour-2-personnes-a-lhotel-le-mareuil.html