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
/
Try upload file : (?<file>.*)\nUpload File (?<msg>.*)([*\S\s\n])\nClosing log at (?<time>.*) on (?<date>.*)
/
gm
Try upload file : matches the characters Try upload file : literally (case sensitive)
Named Capture Group file
(?<file>.*)
.
matches any character (except for line terminators)
* matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)
\n matches a line-feed (newline) character (ASCII 10)
Upload File matches the characters Upload File literally (case sensitive)
Named Capture Group msg
(?<msg>.*)
.
matches any character (except for line terminators)
* matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)
3rd Capturing Group
([*\S\s\n])
Match a single character present in the list below
[\S\s\n]
* matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)
\S matches any non-whitespace character (equivalent to [^\r\n\t\f\v ])
\s matches any whitespace character (equivalent to [\r\n\t\f\v ])
\n matches a line-feed (newline) character (ASCII 10)
\n matches a line-feed (newline) character (ASCII 10)
Closing log at matches the characters Closing log at literally (case sensitive)
Named Capture Group time
(?<time>.*)
.
matches any character (except for line terminators)
on matches the characters on literally (case sensitive)
Named Capture Group date
(?<date>.*)
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