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 (RE2)

Function

  • Match
  • Substitution
  • List
  • Unit Tests
/
((?:\d{2})(?:\:\d{2}){2}).*?\[\s(\d+).*?\[\s(\d+)
/
gm
1st Capturing Group
((?:\d{2})(?:\:\d{2}){2})
Non-capturing group
(?:\d{2})
\d{2}
matches a digit (equal to [0-9])
{2} Quantifier — Matches exactly 2 times
Non-capturing group
(?:\:\d{2}){2}
{2} Quantifier — Matches exactly 2 times
\: matches the character : literally (case sensitive)
\d{2}
matches a digit (equal to [0-9])
{2} Quantifier — Matches exactly 2 times
.*?
matches any character (except for line terminators)
*? Quantifier — Matches between zero and unlimited times, as few times as possible, expanding as needed (lazy)
\[ matches the character [ literally (case sensitive)
\s matches any whitespace character (equal to [\r\n\t\f\v ])
2nd Capturing Group
(\d+)
\d+
matches a digit (equal to [0-9])
+ Quantifier — Matches between one and unlimited times, as many times as possible, giving back as needed (greedy)
.*?
matches any character (except for line terminators)
*? Quantifier — Matches between zero and unlimited times, as few times as possible, expanding as needed (lazy)
\[ matches the character [ literally (case sensitive)
\s matches any whitespace character (equal to [\r\n\t\f\v ])
3rd Capturing Group
(\d+)
\d+
matches a digit (equal to [0-9])
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

Substitution

Processing...