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

/
/
iug

Test String

Code Generator

Language

Generated Code

using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string pattern = @"{(if|foreach)\s*([^}]*[^}\s])\s*}"; string input = @"{include file = ""include/common/head.tpl"" } {include file = ""include/common/header.default.tpl"" } {if $content['outer']['container']['centered'] }hvcenterContainer hvcenter long{/if} {if !$content['inner']['payment']['payout']} {if isset($content['inner']['pType']) }{$content.inner.pType}{else}1{/if} {language data-case=""title"" }31001001{/language} {language data-case=""title"" }31001002{/language} {language data-case=""title"" }31001003{/language} {language}34012002{/language} {language data-case=""title"" data-sublang=""31001001"" }21000033{/language} {language}34012003{/language} {language data-case=""title"" data-sublang=""31001002"" }21000033{/language} {language}34012004{/language} {language data-case=""title"" data-sublang=""31001003"" }21000033{/language} {language data-case=""title"" }31002001{/language} {language data-case=""title"" }31002002{/language} {language data-case=""title"" }31002003{/language} {language data-case=""title"" }31002004{/language} {language data-case=""title"" }31002005{/language} {language data-case=""title"" }31002006{/language} {if $content['inner']['pType'] == 3 && $content['inner']['step']['count']['software'] >= 3 }active{/if} {language}36000005{/language} {language data-case=""title"" }32013010{/language} {language}34012005{/language} {include file = ""include/project/auth.tpl"" } {language data-case=""title"" }21000001{/language} {if $content['inner']['pType'] == 1 && $content['inner']['step']['count']['default'] >= 3 || $content['inner']['pType'] == 2 && $content['inner']['step']['count']['offer'] >= 3}active{/if} {language data-case=""title"" }36000005{/language} {language data-case=""title"" }32013003{/language} {include file = ""include/project/text.tpl"" } {language data-case=""title"" }21000002{/language} {if $content['inner']['pType'] == 1 && $content['inner']['step']['count']['default'] >= 4 || $content['inner']['pType'] == 2 && $content['inner']['step']['count']['offer'] >= 4 }active{/if} {language data-case=""title"" }36000005{/language} {language data-case=""title"" }32013004{/language} {language}34012006{/language} {language data-case=""title"" }23005003{/language} {$content.inner.comment} {language data-case=""title"" }21000007{/language} {language data-case=""title"" }21000001{/language} {if $content['inner']['pType'] == 1 && $content['inner']['step']['count']['default'] >= 5 || $content['inner']['pType'] == 2 && $content['inner']['step']['count']['offer'] >= 5 || $content['inner']['pType'] == 3 && $content['inner']['step']['count']['software'] >= 4 }active{/if}{language}36000005{/language} {language data-case=""title"" }32013005{/language} {language}34012007{/language} {language data-case=""title"" }23000005{/language} {language data-case=""title"" }30000003{/language} {foreach $content.inner.sourceLanguage.array as $key => $value } {$value} {/foreach} {language data-case=""title"" }23000006{/language} {if isset($content['inner']['category']['array']) && is_array($content['inner']['category']['array']) && count($content['inner']['category']['array']) > 0} {foreach $content.inner.category.array as $key => $value } {$value.name} {/foreach} {/if} {language data-case=""title"" }23000007{/language} {if isset($content['inner']['targetLanguage']['array']) && is_array($content['inner']['targetLanguage']['array']) && count($content['inner']['targetLanguage']['array']) > 0} {foreach $content.inner.targetLanguage.array as $key => $value } {$value.name} {/foreach} {/if} {if isset($content['inner']['projectLanguages']['array']) && is_array($content['inner']['projectLanguages']['array']) && count($content['inner']['projectLanguages']['array']) > 0} {foreach $content.inner.projectLanguages.array as $key => $value } {$value.name} {/foreach} {/if} {language data-case=""title"" }21000001{/language} {if $content['outer']['status']['visibility'] || $content['outer']['status']['filter'] } {language}36000005{/language} {language data-case=""title"" }32013006{/language} {language}34012008{/language} {include file = ""include/project/filter.tpl"" } {language data-case=""title"" }21000007{/language} {language data-case=""title"" }21000001{/language} {/if} {language data-case=""title"" }32013001{/language} Toplam kelime sayısı : {if isset($content['inner']['information']['count']['word']) }{$content.inner.information.count.word}{else}-{/if} {language data-case=""title"" }39002002{/language}{language data-case=""title"" }39002004{/language} {if isset($content['inner']['summary']['time']) }{$content.inner.summary.time}{else}-{/if} {language data-case=""title"" }39002003{/language}{language data-case=""title"" }39002005{/language} {if isset($content['inner']['summary']['amount']['total']) }{$content.inner.summary.amount.total}{else}0{/if} {language data-case=""title"" }39002006{/language} {if isset($content['inner']['summary']['amount']['text']['count']) }{$content.inner.summary.amount.text.count}{else}0{/if}&nbsp; {language data-case=""title"" }39002007{/language} {if isset($content['inner']['summary']['amount']['discount']['count']) }{$content.inner.summary.amount.discount.count}{else}0{/if}&nbsp; {language data-case=""title"" }39002008{/language} {if isset($content['inner']['summary']['amount']['tax']['count']) }{$content.inner.summary.amount.tax.count}{else}0{/if}&nbsp; {language data-case=""title"" }39002009{/language} {if isset($content['inner']['summary']['amount']['gap']['count']) }{$content.inner.summary.amount.gap.count}{else}0{/if}&nbsp; {language data-case=""title"" }32013002{/language} {language}39002010{/language} : - {language data-case=""title"" }39002011{/language} - {language data-case=""title"" }39002012{/language} - {if $content['outer']['status']['adress'] } {language}36000005{/language} {language data-case=""title"" }32013007{/language} {include file = ""include/miscellaneous/adress.tpl"" } {language data-case=""title"" }21000001{/language} {/if} {language}36000005{/language} {language data-case=""title"" }32013012{/language} {include file = ""include/project/creditcard.tpl"" } {language data-case=""title"" }21000001{/language} {if $content['inner']['payment']['status'] && isset($content['inner']['payment']['response']) } {$content.inner.payment.response} {/if} {language}36000005{/language} {include file = ""include/miscellaneous/payment.tpl"" } {language}36000005{/language} {language data-case=""title"" }32013013{/language} {$content.inner.message} {language data-case=""title"" }21000034{/language} {else} {language data-case=""title"" }32013011{/language} {language}34012010{/language} {language data-case=""first"" data-variable=""'{$content.inner.fileCount}'"" }39002023{/language} {language data-variable=""'{$content.inner.information.count.word}'"" }39002024{/language} {language data-case=""first"" }39002006{/language} {language data-variable=""'{$content.inner.projectLanguages.count}'"" }39002026{/language} {if $content['inner']['summary']['amount']['text']['status']} {language data-case=""first"" }39002006{/language} {$content.inner.summary.amount.text.count} {/if} {if $content['inner']['summary']['amount']['discount']['status']} {language data-case=""first"" }39002007{/language} {$content.inner.summary.amount.discount.count} {/if} {if $content['inner']['summary']['amount']['tax']['status']} {language data-case=""first"" }39002008{/language} {$content.inner.summary.amount.tax.count} {/if} {if $content['inner']['summary']['amount']['gap']['status']} {language data-case=""first"" }39002009{/language} {$content.inner.summary.amount.gap.count} {/if} {language data-case=""first"" }39002027{/language} {$content.inner.summary.amount.total} {language data-case=""title"" }21000020{/language} {language data-case=""title"" }21000021{/language} {/if} {include file = ""include/common/footer.long.tpl"" } {include file = ""include/common/foot.tpl"" }"; RegexOptions options = RegexOptions.IgnoreCase | RegexOptions.CultureInvariant; 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