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

`
`
g

Test String

Substitution

Processing...

Code Generator

Generated Code

using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string pattern = @"(?|(\[[\""]?.+?[\""]?\])(=>)\R\s*|(?<=\(0\) )(\{)\R\s*(\}))"; string substitution = @"\1 \2"; string input = @"object(Symfony\Component\HttpFoundation\Request)#250 (21) { [""attributes""]=> object(Symfony\Component\HttpFoundation\ParameterBag)#253 (1) { [""parameters"":protected]=> array(5) { [""_controller""]=> object(Closure)#239 (2) { [""static""]=> array(1) { [""app""]=> object(Silex\Application)#14 (8) { [""providers"":protected]=> array(5) { [0]=> object(Silex\Provider\HttpKernelServiceProvider)#17 (0) { } [1]=> object(Silex\Provider\RoutingServiceProvider)#26 (0) { } [2]=> object(Silex\Provider\ExceptionHandlerServiceProvider)#36 (0) { } [3]=> object(Silex\Provider\TwigServiceProvider)#38 (0) { } [4]=> object(Euskadi31\Silex\Provider\CorsServiceProvider)#54 (0) { } } [""booted"":protected]=> bool(true) [""values"":""Pimple\Container"":private]=> array(37) { [""request.http_port""]=> int(80) [""request.https_port""]=> int(443) [""debug""]=> bool(true) [""charset""]=> string(5) ""UTF-8"" [""logger""]=> NULL [""resolver""]=> object(Symfony\Component\HttpKernel\Controller\ControllerResolver)#307 (1) { [""logger"":""Symfony\Component\HttpKernel\Controller\ControllerResolver"":private]=> NULL } [""argument_metadata_factory""]=> object(Symfony\Component\HttpKernel\ControllerMetadata\ArgumentMetadataFactory)#301 (0) { } [""argument_value_resolvers""]=> array(5) { [0]=> object(Silex\AppArgumentValueResolver)#298 (1) { [""app"":""Silex\AppArgumentValueResolver"":private]=> *RECURSION* } [1]=> object(Symfony\Component\HttpKernel\Controller\ArgumentResolver\RequestAttributeValueResolver)#295 (0) { } [2]=> object(Symfony\Component\HttpKernel\Controller\ArgumentResolver\RequestValueResolver)#292 (0) { } [3]=> object(Symfony\Component\HttpKernel\Controller\ArgumentResolver\DefaultValueResolver)#289 (0) { } [4]=> object(Symfony\Component\HttpKernel\Controller\ArgumentResolver\VariadicValueResolver)#286 (0) { } }"; Regex regex = new Regex(pattern); string result = regex.Replace(input, substitution); } }

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