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
  • Golang
  • Java 8

Function

  • Match
  • Substitution
  • List
  • Unit Tests

Tools

Sponsor
Jamstack at Scale
/
^(\w+)\s+(\w+)\s*,\s*(\w+).*
/
gmu
^ asserts position at start of a line
1st Capturing Group
(\w+)
\w
match any word character in any script (equivalent to [\p{L}\p{N}_])
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
\s
matches any kind of invisible character (equivalent to [\p{Z}\h\v])
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
2nd Capturing Group
(\w+)
\w
match any word character in any script (equivalent to [\p{L}\p{N}_])
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
\s
matches any kind of invisible character (equivalent to [\p{Z}\h\v])
* matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)
, matches the character , with index 4410 (2C16 or 548) literally (case sensitive)
\s
matches any kind of invisible character (equivalent to [\p{Z}\h\v])
* matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)
3rd Capturing Group
(\w+)
\w
match any word character in any script (equivalent to [\p{L}\p{N}_])
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
.
matches any character, including unicode (except for line terminators)
* matches the previous token between zero and unlimited 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)
u modifier: unicode. Pattern strings are treated as UTF-16. Also causes escape sequences to match unicode characters
Your regular expression does not match the subject string.Try launching the debugger to find out why.

Regular Expression
No Match

/
/
gmu

Test String

Substitution

Processing...

Code Generator

Language

Generated Code

Loading code sample...
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report.
For a full regex reference for Perl, please visit: http://perldoc.perl.org/perlre.html

Regular Expressions 101

Please wait while the app is loading...