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

/
/
gm

Test String

Code Generator

Language

Generated Code

using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string pattern = @"(.*\d{5,}.*)|(^(\,|\.|\\|\'|\-|\?|\*|\(|\@|\^|\=|\/|\%|\"").*)|(.*(\<|\>|\[|\]|\;).*)|(.*(\.html|\.php).*)|^(\d\.\d)|(^\\.*)|(^\%.*\%)|(\d{1,3}(((x|\.|\.[[:space:]]){1,2})|[[:space:]])\d{1,3})|.*x$|^0[a-z]*|.{50,}"; string input = @"<script>alert('hai');</script> 0.8 003902 ,eja kerja .akeup 081320266690 1 set meja kursi 0elan meja makan 100 meja 12 cm 10023995 ] ""abcd"" \yj magnolia %m087% 't. shower set kris prem rev wht ptss-0211-5w -tangga/kamar-mandi/1kvigy-jual-title-deck-karpet-anti-licin-bath-mat-anti-slip ? sarapan✅ lunch crew✅ snack crew✅ video on process undangan ? roundown ✅ backdrops✅ photo booth✅ documentation ✅ rooms hotel ? catering ? panggung ? opening speech ? flag dance ✅ door prizes? seragam ? cue card ?. d . , ?meja? 'merlott mylo set meja makan *""tangga""* @meja (u/6) *晶杯子 /*meja*/ /%meja ==== ^meja^ 14 pcs radiator cup tester ( top quality ) alat tes kebocoran radiator 120x200x35 cm jty202 ubah lokasi produk hanya bisa di ambil di lippo plaza kupang (informa) verified brand linotela dikirim oleh ruparupa detail produk 640 × 640gambar mungkin memiliki hak cipta. pelajari lebih lanjut kuncibengkel %meja %mp18.html 100x 25x25 250x250 123. 456 123.456 123 456"; RegexOptions options = RegexOptions.Multiline; foreach (Match m in Regex.Matches(input, pattern, options)) { 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