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

using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string pattern = @"\""year\""\:(\d{4})\,"; string input = @"{""total_pages"":1,""total_count"":3,""per_page"":60,""page"":1,""data"":[{""id"":""524414"",""type"":""subtitle"",""attributes"":{""subtitle_id"":""524414"",""language"":""ro"",""download_count"":1421,""new_download_count"":1,""hearing_impaired"":false,""hd"":false,""fps"":25.0,""votes"":0,""ratings"":0.0,""from_trusted"":false,""foreign_parts_only"":false,""upload_date"":""2010-03-07T08:17:40Z"",""ai_translated"":false,""machine_translated"":false,""release"":""Casino Royale - oo7"",""comments"":""AUTOLOAD AUTOUPLOAD"",""legacy_subtitle_id"":3650579,""uploader"":{""uploader_id"":3282,""name"":""os-auto"",""rank"":""Application Developers""},""feature_details"":{""feature_id"":518630,""feature_type"":""Movie"",""year"":1967,""title"":""Casino Royale"",""movie_name"":""1967 - Casino Royale"",""imdb_id"":61452,""tmdb_id"":12208},""url"":""https://www.opensubtitles.com/ro/subtitles/legacy/3650579"",""related_links"":{""label"":""All subtitles for Casino Royale"",""url"":""https://www.opensubtitles.com/ro/movies/1967-casino-royale"",""img_url"":""https://s9.osdb.link/features/0/3/6/518630.jpg""},""files"":[{""file_id"":579397,""cd_number"":1,""file_name"":""Casino Royale - oo7.sub""}],""moviehash_match"":true}},{""id"":""522774"",""type"":""subtitle"",""attributes"":{""subtitle_id"":""522774"",""language"":""es"",""download_count"":1003,""new_download_count"":1,""hearing_impaired"":false,""hd"":false,""fps"":25.0,""votes"":2,""ratings"":9.5,""from_trusted"":false,""foreign_parts_only"":false,""upload_date"":""2003-12-18T23:00:00Z"",""ai_translated"":false,""machine_translated"":false,""release"":""Casino Royale (1967)"",""comments"":null,""legacy_subtitle_id"":59217,""uploader"":{""uploader_id"":8092,""name"":""ShooCat (a)"",""rank"":""bronze member""},""feature_details"":{""feature_id"":518630,""feature_type"":""Movie"",""year"":1967,""title"":""Casino Royale"",""movie_name"":""1967 - Casino Royale"",""imdb_id"":61452,""tmdb_id"":12208},""url"":""https://www.opensubtitles.com/es/subtitles/legacy/59217"",""related_links"":{""label"":""All subtitles for Casino Royale"",""url"":""https://www.opensubtitles.com/es/movies/1967-casino-royale"",""img_url"":""https://s9.osdb.link/features/0/3/6/518630.jpg""},""files"":[{""file_id"":577519,""cd_number"":1,""file_name"":""Casino Royale (SPA).srt""}],""moviehash_match"":true}},{""id"":""525409"",""type"":""subtitle"",""attributes"":{""subtitle_id"":""525409"",""language"":""es"",""download_count"":432,""new_download_count"":2,""hearing_impaired"":false,""hd"":false,""fps"":25.0,""votes"":0,""ratings"":0.0,""from_trusted"":false,""foreign_parts_only"":false,""upload_date"":""2014-05-04T22:40:02Z"",""ai_translated"":false,""machine_translated"":false,""release"":""James Bond - 007 - Casino Royale -1967"",""comments"":"",""legacy_subtitle_id"":5657430,""uploader"":{""uploader_id"":3282,""name"":""os-auto"",""rank"":""Application Developers""},""feature_details"":{""feature_id"":518630,""feature_type"":""Movie"",""year"":1967,""title"":""Casino Royale"",""movie_name"":""1967 - Casino Royale"",""imdb_id"":61452,""tmdb_id"":12208},""url"":""https://www.opensubtitles.com/es/subtitles/legacy/5657430"",""related_links"":{""label"":""All subtitles for Casino Royale"",""url"":""https://www.opensubtitles.com/es/movies/1967-casino-royale"",""img_url"":""https://s9.osdb.link/features/0/3/6/518630.jpg""},""files"":[{""file_id"":580507,""cd_number"":1,""file_name"":""James Bond - 007 - Casino Royale -1967-spa.srt""}],""moviehash_match"":true}}]}"; Match m = Regex.Match(input, pattern); Console.WriteLine("'{0}' found at index {1}", m.Value, m.Index); } }

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 C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx