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

using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string pattern = @"^([A-Z]+): (.*(?:\r?\n(?![A-Z]+: ).*)*)"; string input = @"SQL: SELECT `translation`.`string`, `translation`.`translate` FROM `translation` WHERE (store_id IN (0 , :store_id)) AND (locale = :locale) ORDER BY `store_id` ASC BIND: array ( ':locale' => 'en_US', ':store_id' => '3', ) AFF: 0 TIME: 0.0003 TRACE: #1 xxx\Framework\DB\Logger\File[xxx\Framework\DB\Logger\LoggerAbstract]#0000000028783cd000000000748608f7#->getStats('query', 'SELECT `translat...', array(':locale' => 'en_US', ':store_id' => 3), &xxx\Framework\DB\Statement\Pdo\Mysql#0000000028783e1900000000748608f7#) called at [vendor/xxx/framework/DB/Logger/File.php:67] #2 xxx\Framework\DB\Logger\File#0000000028783cd000000000748608f7#->logStats('query', 'SELECT `translat...', array(':locale' => 'en_US', ':store_id' => 3), &xxx\Framework\DB\Statement\Pdo\Mysql#0000000028783e1900000000748608f7#) called at [vendor/xxx/framework/DB/Logger/LoggerProxy.php:152] #3 xxx\Framework\DB\Logger\LoggerProxy#0000000028783cba00000000748608f7#->logStats('query', 'SELECT `translat...', array(':locale' => 'en_US', ':store_id' => 3), &xxx\Framework\DB\Statement\Pdo\Mysql#0000000028783e1900000000748608f7#) called at [vendor/xxx/framework/DB/Adapter/Pdo/Mysql.php:547] #4 xxx\Framework\DB\Adapter\Pdo\Mysql\Interceptor[xxx\Framework\DB\Adapter\Pdo\Mysql]#0000000028783ca800000000748608f7#->_query('SELECT `translat...', array(':locale' => 'en_US', ':store_id' => 3)) called at [vendor/xxx/framework/DB/Adapter/Pdo/Mysql.php:613] #5 xxx\Framework\DB\Adapter\Pdo\Mysql\Interceptor[xxx\Framework\DB\Adapter\Pdo\Mysql]#0000000028783ca800000000748608f7#->query(&xxx\Framework\DB\Select#0000000028783eea00000000748608f7#, array(':locale' => 'en_US', ':store_id' => 3)) called at [generated/code/xxx/Framework/DB/Adapter/Pdo/Mysql/Interceptor.php:128] #6 xxx\Framework\DB\Adapter\Pdo\Mysql\Interceptor#0000000028783ca800000000748608f7#->query(&xxx\Framework\DB\Select#0000000028783eea00000000748608f7#, array(':locale' => 'en_US', ':store_id' => 3)) called at [vendor/xxx/zendframework1/library/Zend/Db/Adapter/Abstract.php:811] #7 xxx\Framework\DB\Adapter\Pdo\Mysql\Interceptor[Zend_Db_Adapter_Abstract]#0000000028783ca800000000748608f7#->fetchPairs(&xxx\Framework\DB\Select#0000000028783eea00000000748608f7#, array(':locale' => 'en_US', ':store_id' => 3)) called at [generated/code/xxx/Framework/DB/Adapter/Pdo/Mysql/Interceptor.php:1610] #8 xxx\Framework\DB\Adapter\Pdo\Mysql\Interceptor#0000000028783ca800000000748608f7#->fetchPairs(&xxx\Framework\DB\Select#0000000028783eea00000000748608f7#, array(':locale' => 'en_US', ':store_id' => 3)) called at [vendor/xxx/module-translation/Model/ResourceModel/Translate.php:90] #9 xxx\Translation\Model\ResourceModel\Translate#0000000028783eeb00000000748608f7#->getTranslationArray(3, 'en_US') called at [generated/code/xxx/Framework/Translate/ResourceInterface/Proxy.php:95] #10 xxx\Framework\Translate\ResourceInterface\Proxy#0000000028783ecd00000000748608f7#->getTranslationArray(NULL, 'en_US') called at [vendor/xxx/framework/Translate.php:380] #11 xxx\TranslationGenerator\Model\Import\Translate[xxx\Framework\Translate]#0000000028783ede00000000748608f7#->_loadDbTranslation() called at [vendor/xxx/translation-generator/Model/Import/Translate.php:130] #12 xxx\TranslationGenerator\Model\Import\Translate#0000000028783ede00000000748608f7#->loadData('frontend', false) called at [vendor/xxx/framework/App/Area.php:245] #13 xxx\Framework\App\Area#0000000028783ec600000000748608f7#->_initTranslate() called at [vendor/xxx/framework/App/Area.php:216] #14 xxx\Framework\App\Area#0000000028783ec600000000748608f7#->_loadPart('translate') called at [vendor/xxx/framework/App/Area.php:143] #15 xxx\Framework\App\Area#0000000028783ec600000000748608f7#->load('translate') called at [vendor/xxx/framework/View/DesignLoader.php:55] #16 xxx\Framework\View\DesignLoader#0000000028783ec200000000748608f7#->load() called at [vendor/xxx/framework/App/Action/Plugin/Design.php:48] #17 xxx\Framework\App\Action\Plugin\Design#0000000028783edd00000000748608f7#->beforeDispatch(&xxx\Customer\Controller\Section\Load\Interceptor#0000000028783ed400000000748608f7#, &xxx\Framework\App\Request\Http#0000000028783d0b00000000748608f7#) called at [vendor/xxx/framework/Interception/Interceptor.php:121] #18 xxx\Customer\Controller\Section\Load\Interceptor#0000000028783ed400000000748608f7#->xxx\Framework\Interception\{closure}(&xxx\Framework\App\Request\Http#0000000028783d0b00000000748608f7#) called at [vendor/xxx/framework/Interception/Interceptor.php:153] #19 xxx\Customer\Controller\Section\Load\Interceptor#0000000028783ed400000000748608f7#->___callPlugins('dispatch', array(&xxx\Framework\App\Request\Http#0000000028783d0b00000000748608f7#), array(array('designLoader', 'customerNotifica...', 'catalog_app_acti...', 'tax-app-action-d...', 'weee-app-action-...', 'storeCheck', 'contextPlugin', 'customer-app-act...', 'customer-segment...'))) called at [generated/code/xxx/Customer/Controller/Section/Load/Interceptor.php:39] #20 xxx\Customer\Controller\Section\Load\Interceptor#0000000028783ed400000000748608f7#->dispatch(&xxx\Framework\App\Request\Http#0000000028783d0b00000000748608f7#) called at [vendor/xxx/framework/App/FrontController.php:162] #21 xxx\Framework\App\FrontController\Interceptor[xxx\Framework\App\FrontController]#0000000028783ce800000000748608f7#->processRequest(&xxx\Framework\App\Request\Http#0000000028783d0b00000000748608f7#, &xxx\Customer\Controller\Section\Load\Interceptor#0000000028783ed400000000748608f7#) called at [vendor/xxx/framework/App/FrontController.php:98] #22 xxx\Framework\App\FrontController\Interceptor[xxx\Framework\App\FrontController]#0000000028783ce800000000748608f7#->dispatch(&xxx\Framework\App\Request\Http#0000000028783d0b00000000748608f7#) called at [vendor/xxx/framework/Interception/Interceptor.php:58] #23 xxx\Framework\App\FrontController\Interceptor#0000000028783ce800000000748608f7#->___callParent('dispatch', array(&xxx\Framework\App\Request\Http#0000000028783d0b00000000748608f7#)) called at [vendor/xxx/framework/Interception/Interceptor.php:138] #24 xxx\Framework\App\FrontController\Interceptor#0000000028783ce800000000748608f7#->xxx\Framework\Interception\{closure}(&xxx\Framework\App\Request\Http#0000000028783d0b00000000748608f7#) called at [vendor/xxx/module-store/App/FrontController/Plugin/RequestPreprocessor.php:99] #25 xxx\Store\App\FrontController\Plugin\RequestPreprocessor#0000000028783f0400000000748608f7#->aroundDispatch(&xxx\Framework\App\FrontController\Interceptor#0000000028783ce800000000748608f7#, &Closure#0000000028783c2500000000748608f7#, &xxx\Framework\App\Request\Http#0000000028783d0b00000000748608f7#) called at [vendor/xxx/framework/Interception/Interceptor.php:135] #26 xxx\Framework\App\FrontController\Interceptor#0000000028783ce800000000748608f7#->xxx\Framework\Interception\{closure}(&xxx\Framework\App\Request\Http#0000000028783d0b00000000748608f7#) called at [vendor/xxx/module-page-cache/Model/App/FrontController/BuiltinPlugin.php:73] #27 xxx\PageCache\Model\App\FrontController\BuiltinPlugin#0000000028783c5a00000000748608f7#->aroundDispatch(&xxx\Framework\App\FrontController\Interceptor#0000000028783ce800000000748608f7#, &Closure#0000000028783c2500000000748608f7#, &xxx\Framework\App\Request\Http#0000000028783d0b00000000748608f7#) called at [vendor/xxx/framework/Interception/Interceptor.php:135] #28 xxx\Framework\App\FrontController\Interceptor#0000000028783ce800000000748608f7#->xxx\Framework\Interception\{closure}(&xxx\Framework\App\Request\Http#0000000028783d0b00000000748608f7#) called at [vendor/xxx/framework/Interception/Interceptor.php:153] #29 xxx\Framework\App\FrontController\Interceptor#0000000028783ce800000000748608f7#->___callPlugins('dispatch', array(&xxx\Framework\App\Request\Http#0000000028783d0b00000000748608f7#), NULL) called at [generated/code/xxx/Framework/App/FrontController/Interceptor.php:26] #30 xxx\Framework\App\FrontController\Interceptor#0000000028783ce800000000748608f7#->dispatch(&xxx\Framework\App\Request\Http#0000000028783d0b00000000748608f7#) called at [vendor/xxx/framework/App/Http.php:116] #31 xxx\Framework\App\Http\Interceptor[xxx\Framework\App\Http]#0000000028783d4700000000748608f7#->launch() called at [generated/code/xxx/Framework/App/Http/Interceptor.php:24] #32 xxx\Framework\App\Http\Interceptor#0000000028783d4700000000748608f7#->launch() called at [vendor/xxx/framework/App/Bootstrap.php:261] #33 xxx\Framework\App\Bootstrap#0000000028783d9c00000000748608f7#->run(&xxx\Framework\App\Http\Interceptor#0000000028783d4700000000748608f7#) called at [pub/index.php:49]"; 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