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
Processing...

Test String

Code Generator

Language

Generated Code

$re = '/(?:\[[^\\\\[]*\]\n)*([\s\S]*)/'; $str = '[Event "Wch U16"] [Site "Wattignies"] [Date "1976.??.??"] [Round "?"] [White "Dunne, David Joseph"] [Black "Kasparov, Gary"] [Result "0-1"] [WhiteElo ""] [BlackElo ""] [ECO "B51"] 1. e2e4 c7c5 2. g1f3 d7d6 3. f1b5+ b8d7 4. d2d4 g8f6 5. b1c3 c5d4 6. d1d4 e7e5 7. d4d3 h7h6 8. c1e3 f8e7 9. e1g1 e8g8 10. a1d1 a7a6 11. b5c4 d8c7 12. a2a4 d7c5 13. e3c5 c7c5 14. c3d5 f6d5 15. c4d5 a8b8 16. f3d2 c8d7 17. d5b3 b7b5 18. a4a5 b8c8 19. d2f3 d7e6 20. f1e1 f8d8 21. e1e2 c8c7 22. e2d2 d8c8 23. h2h3 c5b4 24. b3e6 f7e6 25. d3b3 c7c4 26. d2e2 b4b3 27. c2b3 c4c1 28. d1c1 c8c1+ 29. g1h2 g8f7 30. f3e1 e7d8 31. e1d3 c1d1 32. d3b4 d8a5 33. b4a6 d1c1 34. b3b4 a5b6 35. b2b3 c1c3 36. e2a2 c3b3 37. a2c2 b6d4 38. c2c7+ f7f6 39. f2f3 b3a3 40. c7c6 a3c3 41. c6c7 c3c7 42. a6c7 d4c3 43. c7b5 c3b4 44. b5a7 f6f7 45. h2g3 f7e8 46. g3g4 e8d7 47. f3f4 g7g6 48. h3h4 d7c7 49. f4f5 e6f5+ 50. e4f5 g6f5+ 51. g4f5 c7b7 52. a7b5 b7b6 53. b5d6 b4d6 54. g2g4 b6c6 55. g4g5 h6g5 56. h4g5 c6d5 57. g5g6 d6f8 0-1'; preg_match($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