Regular Expressions 101

@regex101
Donate
Sponsor
Contact
Bug Reports & Feedback
Wiki
Whats new?

Save & Share

  • Save Regex
    ctrl+s
  • Update Regex
    ctrl+⇧+s

Flavor

  • PCRE2 (PHP >=7.3)
  • PCRE (PHP <7.3)
  • ECMAScript (JavaScript)
  • Python 2.7
  • Golang
  • Java 8

Function

  • Match
  • Substitution
  • List
  • Unit Tests
~
^browse/(coffee|goodies)/([A-Za-z0-9\%\+\-])/([0-9])/
~
gm
^ asserts position at start of a line
browse/ matches the characters browse/ literally (case sensitive)
1st Capturing Group
(coffee|goodies)
1st Alternative
coffee
coffee matches the characters coffee literally (case sensitive)
2nd Alternative
goodies
goodies matches the characters goodies literally (case sensitive)
/ matches the character / literally (case sensitive)
2nd Capturing Group
([A-Za-z0-9\%\+\-])
Match a single character present in the list below
[A-Za-z0-9\%\+\-]
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
A-Z matches a single character in the range between A (index 65) and Z (index 90) (case sensitive)
a-z matches a single character in the range between a (index 97) and z (index 122) (case sensitive)
0-9 matches a single character in the range between 0 (index 48) and 9 (index 57) (case sensitive)
\% matches the character % literally (case sensitive)
\+ matches the character + literally (case sensitive)
\- matches the character - literally (case sensitive)
/ matches the character / literally (case sensitive)
3rd Capturing Group
([0-9])
Match a single character present in the list below
[0-9]
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
0-9 matches a single character in the range between 0 (index 48) and 9 (index 57) (case sensitive)
/
matches the character / literally (case sensitive)
? matches the previous token between zero and one times, as many times as possible, giving back as needed (greedy)
Global pattern flags
g modifier: global. All matches (don't return after first match)
m modifier: multi line. Causes ^ and $ to match the begin/end of each line (not only begin/end of string)
Your regular expression does not match the subject string.Try launching the debugger to find out why.

Regular Expression
No Match

~
~
gm

Test String

Regex Debugger

Please wait while your expression is being debugged...