Regular Expressions 101

Save & Manage Regex

  • Current Version: 1
  • Save & Share
  • Community Library

Flavor

  • PCRE2 (PHP)
  • ECMAScript (JavaScript)
  • Python
  • Golang
  • Java
  • .NET 7.0 (C#)
  • Rust
  • PCRE (Legacy)
  • Regex Flavor Guide

Function

  • Match
  • Substitution
  • List
  • Unit Tests
Sponsors
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

use strict; my $str = 'e R$ \'+FormatFloat(\'#,##0.00\', valorPercentual ) else FieldByName(\'InstrucoesMultaVencimento\').Value := \'\'; end; if oCDS_CONVENIOBANCARIOCOBREBEMPROP.Locate(\'CBC_NOMEPROPRIEDADE\',\'InstrucoesDiasProtesto\',[]) then begin AlteraDescricaoInstrucao := oCDS_CONVENIOBANCARIOCOBREBEMPROP.FieldByName(\'CBC_VALORPROPRIEDADE\').AsString; AlteraDescricaoInstrucao := StringReplace( AlteraDescricaoInstrucao,\'#DIA#\', FloatToStr(oCds_ConvenioBanco.FieldByName(\'CBP_PROTESTODIAS\').AsFloat),[rfReplaceAll, rfIgnoreCase]); FieldByName(\'InstrucoesDiasProtesto\').Value := AlteraDescricaoInstrucao; end else begin if ( oCds_ConvenioBanco.FieldByName(\'CBP_PROTESTODIAS\').AsFloat > 0 ) then FieldByName(\'InstrucoesDiasProtesto\').Value := \'Após \'+IntToStr(oCds_ConvenioBanco.FieldByName(\'CBP_PROTESTODIAS\').AsInteger)+\' dias do vencimento protestar\' else FieldByName(\'InstrucoesDiasProtesto\').Value := \'\'; end; if ( oCds_ConvenioBanco.FieldByName(\'CBP_CALCULAVALORJURO\').AsString = \'P\' ) then valorJuroDiario := ( ( BoletoBancario.ConvenioBancario.ValorDocumento * oCds_ConvenioBanco.FieldByName(\'CBP_PERCENTUALJUROSDIARIO\').AsFloat) / 100) else valorJuroDiario := oCds_ConvenioBanco.FieldByName(\'CBP_PERCENTUALJUROSDIARIO\').AsFloat; if oCDS_CONVENIOBANCARIOCOBREBEMPROP.Locate(\'CBC_NOMEPROPRIEDADE\',\'InstrucoesJurosDiario\',[]) then FieldByName(\'InstrucoesJurosDiario\').Value := oCDS_CONVENIOBANCARIOCOBREBEMPROP.FieldByName(\'CBC_VALORPROPRIEDADE\').AsString else begin if ( oCds_ConvenioBanco.FieldByName(\'CBP_PERCENTUALJUROSDIARIO\').AsFloat > 0 ) then FieldByName(\'InstrucoesJurosDiario\').Value := \'Após vencimento cobrar juros de R$ \'+FormatFloat(\'#,##0.00\', valorJuroDiario)+\' por dia de atraso.\' else FieldByName(\'InstrucoesJurosDiario\').Value := \'\' end; if ( BoletoBancario.ConvenioBancario.OutrasInstrucoes <> \'\' ) then OutrasIntrucoes := oCds_ConvenioBanco.FieldByName(\'CBB_OUTRASINSTRUCOES\').AsString else OutrasIntrucoes := \'\'; if ( NumeroNFSe <> \'SemNumero\' ) then{#T31720} OutrasIntrucoes := OutrasIntrucoes + \'Boleto ref. a Notas: \' + NumeroNFSe; // NumeroNF; {#T31549} if ( NumeroNF <> \'SemNumero\' ) then begin{#T31720} if ( OutrasIntrucoes <> \'\') then begin OutrasIntrucoes := OutrasIntrucoes+#13#10+ \'RPS: \' + NumeroNF; // NumeroNFSe; {#T31549} end else OutrasIntrucoes := \'Boleto ref. a RPS: \' + NumeroNF; // NumeroNFSe; {#T31549} end;varToStr( copy( BoletoBancario.ConvenioBancario.NumeroContaCorrente, Length(BoletoBancario.ConvenioBancario.NumeroContaCorrente), 1)); FieldByName(\'NomeSacado\').Value := IntToStr(BoletoBancario.CodigoCliente)+\' - \'+BoletoBancario.NomeCliente; FieldByName(\'RuaSacado\').Value := oCds_TitulosSelecionados.FieldByName(\'CLN_ENDERECO\').AsString+\', Nº \'+ oCds_TitulosSelecionados.FieldByName(\'CLN_NUMERO\').AsString; cepCliente := FormatMaskText(\'99999-999;0;\', oCds_TitulosSelecionados.FieldByName(\'CEP_CEP\').AsString); FieldByName(\'CidadeEstadoCep\').Value := cepCliente+\' \'+ BoletoBancario.CidadeCliente+\'-\'+ BoletoBancario.EstadoCliente; Carteira := Codig'; my $regex = qr/(?:\'\,\[\]\)\d{0,10}\ then\ begin\s?)^(.*?)\bend;/msp; if ( $str =~ /$regex/g ) { print "Whole match is ${^MATCH} and its start/end positions can be obtained via \$-[0] and \$+[0]\n"; # print "Capture Group 1 is $1 and its start/end positions can be obtained via \$-[1] and \$+[1]\n"; # print "Capture Group 2 is $2 ... and so on\n"; } # ${^POSTMATCH} and ${^PREMATCH} are also available with the use of '/p' # Named capture groups can be called via $+{name}

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 Perl, please visit: http://perldoc.perl.org/perlre.html