Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression
No Match

/
/

Test String

Code Generator

Language

Generated Code

$re = '/Total statistics:\s+\K\d+/'; $str = '{"logSystem":[[2019,4,26,10,37,0,44872,"Battery Charge Started! 17.0°C 21.05Volt","#000099","normal"],[2019,4,26,10,37,0,44871,"Total statistics: 334418m, 23862min, blade on time: 21289min","#2E2EFE","bold"],[2019,4,26,10,37,0,44870,"Current cut statistics: 2m, 0min, blade on time: 0min","#2E2EFE","bold"],[2019,4,26,10,37,0,44869,"Landroid at home","#996600","normal"],[2019,4,26,10,37,0,44868,"Landroid searching home","#996600","normal"],[2019,4,26,10,36,46,44867,"Landroid following wire","#996600","normal"],[2019,4,26,10,36,43,44866,"Landroid searching wire","#996600","normal"],[2019,4,26,10,36,41,44865,"[auto] message reset Close windows to go charge","#FFA800","normal"],[2019,4,26,10,36,40,44864,"Landroid start sequence","#996600","normal"],[2019,4,26,10,36,40,44863,"Home button pressed","#FFA800","normal"],[2019,4,26,10,36,38,44862,"[user] message reset Upside Down","#FFA800","normal"],[2019,4,26,10,34,47,44861,"Landroid Upside Down 41x-2y-0.6z","#FF0000","bold"],[2019,4,26,10,34,42,44860,"[user] message reset Trapped","#FFA800","normal"],[2019,4,26,10,34,35,44859,"[auto] message reset Outside working area","#FFA800","normal"],[2019,4,26,10,29,20,44858,"Landroid in idle state 16.4°C 20.33 Volt","#996600","normal"],[2019,4,26,10,29,20,44857,"Total statistics: 334416m, 23862min, blade on time: 21289min","#2E2EFE","bold"],[2019,4,26,10,29,20,44856,"Current cut statistics: 71m, 8min, blade on time: 0min","#2E2EFE","bold"],[2019,4,26,10,29,20,44855,"!ERROR! outside wire timeout","#FF0000","bold"],[2019,4,26,10,28,54,44854,"[Wifi] Connected","#2E2EFE","normal"],[2019,4,26,10,28,36,44853,"[Wifi] Connection Lost!","#2E2EFE","normal"],[2019,4,26,10,25,6,44852,"Landroid following wire","#996600","normal"],[2019,4,26,10,25,4,44851,"Landroid searching home","#996600","normal"],[2019,4,26,10,24,54,44850,"Landroid following wire","#996600","normal"],[2019,4,26,10,24,54,44849,"Landroid searching home","#996600","normal"],[2019,4,26,10,24,28,44848,"Landroid following wire","#996600","normal"],[2019,4,26,10,24,25,44847,"Landroid searching wire","#996600","normal"],[2019,4,26,10,23,42,44846,"Landroid following wire","#996600","normal"],[2019,4,26,10,23,39,44845,"Landroid searching wire","#996600","normal"],[2019,4,26,10,22,58,44844,"Landroid following wire","#996600","normal"],[2019,4,26,10,22,54,44843,"Landroid searching wire","#996600","normal"],[2019,4,26,10,22,54,44842,"Flowerbed loop detected leaving...","#FFA800","normal"],[2019,4,26,10,21,36,44841,"Landroid following wire","#996600","normal"],[2019,4,26,10,21,22,44840,"Landroid searching wire","#996600","normal"],[2019,4,26,10,21,22,44839,"[Battery LOW] homing req, status: 14.8°C 23.65Volt","#FFA800","normal"],[2019,4,26,10,21,13,44838,"Landroid grass cutting","#996600","normal"],[2019,4,26,10,21,10,44837,"[auto] message reset Close windows to start","#FFA800","normal"],[2019,4,26,10,21,9,44836,"Landroid start sequence","#996600","normal"],[2019,4,26,10,21,9,44835,"Start button pressed","#FFA800","normal"],[2019,4,26,10,21,7,44834,"[user] message reset Trapped","#FFA800","normal"],[2019,4,26,10,21,3,44833,"[Wifi] Connected","#2E2EFE","normal"],[2019,4,26,10,20,51,44832,"Landroid in idle state 14.7°C 24.20 Volt","#996600","normal"],[2019,4,26,10,20,51,44831,"Power On v: 2.45","#000000","bold"],[2019,4,25,19,36,18,44830,"Shutdown 24.07Volt","#000000","bold"],[2019,4,25,19,36,18,44829,"Landroid idle shutdown timer","#FFA800","normal"],[2019,4,25,19,16,18,44828,"Landroid in idle state 37.6°C 24.05 Volt","#996600","normal"],[2019,4,25,19,16,18,44827,"Total statistics: 334345m, 23854min, blade on time: 21289min","#2E2EFE","bold"],[2019,4,25,19,16,18,44826,"Current cut statistics: 1087m, 76min, blade on time: 76min","#2E2EFE","bold"],[2019,4,25,19,16,17,44825,"Landroid following wire","#996600","normal"],[2019,4,25,19,16,15,44824,"Landroid searching home","#996600","normal"],[2019,4,25,19,16,9,44823,"Landroid following wire","#996600","normal"],[2019,4,25,19,16,9,44822,"Landroid searching home","#996600","normal"],[2019,4,25,19,16,5,44821,"Landroid following wire","#996600","normal"],[2019,4,25,19,15,58,44820,"Landroid lift recovery procedure","#996600","normal"],[2019,4,25,19,15,57,44819,"Landroid following wire","#996600","normal"],[2019,4,25,19,15,55,44818,"Landroid searching home","#996600","normal"],[2019,4,25,19,15,50,44817,"Landroid following wire","#996600","normal"],[2019,4,25,19,15,50,44816,"Landroid searching wire","#996600","normal"],[2019,4,25,19,15,50,44815,"[Battery LOW] homing req, status: 37.6°C 23.97Volt","#FFA800","normal"],[2019,4,25,19,15,28,44814,"Landroid grass cutting","#996600","normal"],[2019,4,25,19,15,24,44813,"Landroid trapped recovery procedure","#996600","normal"],[2019,4,25,19,12,26,44812,"Landroid grass cutting","#996600","normal"],[2019,4,25,19,12,19,44811,"Landroid trapped recovery procedure","#996600","normal"],[2019,4,25,19,10,49,44810,"Landroid grass cutting","#996600","normal"],[2019,4,25,19,10,44,44809,"Landroid trapped recovery procedure","#996600","normal"],[2019,4,25,19,9,22,44808,"Landroid grass cutting","#996600","normal"],[2019,4,25,19,9,18,44807,"Landroid trapped recovery procedure","#996600","normal"],[2019,4,25,19,8,32,44806,"Landroid grass cutting","#996600","normal"],[2019,4,25,19,8,27,44805,"Landroid trapped recovery procedure","#996600","normal"],[2019,4,25,19,8,26,44804,"Landroid grass cutting","#996600","normal"],[2019,4,25,19,8,22,44803,"Landroid trapped recovery procedure","#996600","normal"],[2019,4,25,19,7,55,44802,"Landroid grass cutting","#996600","normal"],[2019,4,25,19,7,51,44801,"Landroid trapped recovery procedure","#996600","normal"],[2019,4,25,19,6,0,44800,"Landroid grass cutting","#996600","normal"],[2019,4,25,19,5,55,44799,"Landroid trapped recovery procedure","#996600","normal"],[2019,4,25,19,5,6,44798,"Landroid grass cutting","#996600","normal"],[2019,4,25,19,5,2,44797,"Landroid trapped recovery procedure","#996600","normal"],[2019,4,25,19,4,10,44796,"Landroid grass cutting","#996600","normal"],[2019,4,25,19,4,5,44795,"Landroid trapped recovery procedure","#996600","normal"],[2019,4,25,19,3,29,44794,"Landroid grass cutting","#996600","normal"],[2019,4,25,19,3,25,44793,"Landroid trapped recovery procedure","#996600","normal"],[2019,4,25,19,3,25,44792,"Landroid grass cutting","#996600","normal"],[2019,4,25,19,3,21,44791,"Landroid trapped recovery procedure","#996600","normal"],[2019,4,25,19,2,58,44790,"Landroid grass cutting","#996600","normal"],[2019,4,25,19,2,54,44789,"Landroid trapped recovery procedure","#996600","normal"],[2019,4,25,19,2,52,44788,"Landroid grass cutting","#996600","normal"],[2019,4,25,19,2,47,44787,"Landroid trapped recovery procedure","#996600","normal"],[2019,4,25,19,2,43,44786,"Landroid grass cutting","#996600","normal"],[2019,4,25,19,2,39,44785,"Landroid trapped recovery procedure","#996600","normal"],[2019,4,25,19,2,23,44784,"Landroid grass cutting","#996600","normal"],[2019,4,25,19,2,18,44783,"Landroid trapped recovery procedure","#996600","normal"],[2019,4,25,19,2,6,44782,"Landroid grass cutting","#996600","normal"],[2019,4,25,19,2,2,44781,"Landroid trapped recovery procedure","#996600","normal"],[2019,4,25,19,1,0,44780,"Landroid grass cutting","#996600","normal"],[2019,4,25,19,0,54,44779,"Landroid trapped recovery procedure","#996600","normal"],[2019,4,25,19,0,54,44778,"Landroid grass cutting","#996600","normal"],[2019,4,25,19,0,48,44777,"Landroid trapped recovery procedure","#996600","normal"],[2019,4,25,19,0,46,44776,"Landroid grass cutting","#996600","normal"],[2019,4,25,19,0,42,44775,"Landroid trapped recovery procedure","#996600","normal"],[2019,4,25,18,59,21,44774,"Landroid grass cutting","#996600","normal"],[2019,4,25,18,59,17,44773,"Landroid trapped recovery procedure","#996600","normal"]]}'; preg_match($re, $str, $matches, PREG_OFFSET_CAPTURE, 0); // Print the entire match result var_dump($matches);

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 PHP, please visit: http://php.net/manual/en/ref.pcre.php