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

/
/
sU

Test String

Code Generator

Generated Code

#include <StringConstants.au3> ; to declare the Constants of StringRegExp #include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate Local $sRegex = "(?sU)\d+?[\r\n]+(.*)3.2.P.4.4.\s+Justification\s+of\s+Specifications" Local $sString = " 26" & @CRLF & _ "Data related to the point SP-WFI-21-Room process fluids " & @CRLF & _ "Sampling Date:16/04/2007 " & @CRLF & _ " 28" & @CRLF & _ "Data related to pint SP-WFI-21-Room process fluids " & @CRLF & _ "Sampling Date: 20/04/2007 " & @CRLF & _ "TEST SPECIFICATIONS RESULTS " & @CRLF & _ "T.O.C. ≤ 500 ppb 6ppb " & @CRLF & _ "Conductivity at 25°C ≤ 1.3 μS.cm-1 1.1 μS.cm-1 " & @CRLF & _ "Data related to the point of use UP-WFI-07 " & @CRLF & _ "Sampling Date: 20/04/2007 " & @CRLF & _ "TEST SPECIFICATIONS RESULTS " & @CRLF & _ "Appearance Clear and colourless liquid Conforms " & @CRLF & _ "pH 5.0 – 7.0 6.20 " & @CRLF & _ "Oxidable substances Conforms Conforms " & @CRLF & _ "Conductivity at 25°C ≤ 1.3 μS.cm-1 1.1 μS.cm-1 " & @CRLF & _ "0 microrg./100ml " & @CRLF & _ "Reference guidelines " & @CRLF & _ "− 3AQ11A: Specifications and Control Tests on the Finished Product - EUDRALEX Volume 3A " & @CRLF & _ "− Topic Q6A, Step 4 Note for Guidance Specifications: Test procedures and Acceptance Criteria for New " & @CRLF & _ "Drug Substances and New Drug Products: Chemical Substances (CPMP/ICH/367/96 - Adopted Nov. 99) " & @CRLF & _ " 29" & @CRLF & _ "3.2.P.4.2 Analytical Procedures " & @CRLF & _ "All the analytical procedures related to the control of excipients are those described in the " & @CRLF & _ "corresponding Ph. Eur. monographs current edition (refer to 3.2.P.4.1). " & @CRLF & _ "Reference guidelines " & @CRLF & _ "− Topic Q2A, Step 5 Note for Guidance on Validation of Analytical Methods: Definitions and Terminology " & @CRLF & _ "(CPMP/ICH/381/95 - adopted Nov. 94) " & @CRLF & _ "− 3AQ14A: Validation of Analytical Procedures: Definition and Terminology - EUDRALEX Volume 3A " & @CRLF & _ "− 3AQ13A: Validation of Analytical Procedures: Methodology - EUDRALEX Volume 3A " & @CRLF & _ "− Topic Q6A, Step 4 Note for Guidance Specifications: Test procedures and Acceptance Criteria for New " & @CRLF & _ "Drug Substances and New Drug Products: Chemical Substances (CPMP/ICH/367/96 - Adopted Nov. 99) " & @CRLF & _ "3.2.P.4.3 Validation of Analytical Procedures " & @CRLF & _ "All the analytical procedures proposed to control the excipients are those reported in Ph. Eur. " & @CRLF & _ "monographs current edition and no variation has been introduced; each method is validated " & @CRLF & _ "concerning specificity and linearity, in order to grant suitability of the instruments used. " & @CRLF & _ "Reference guidelines: " & @CRLF & _ "− Topic Q2A, Step 5 Note for Guidance on Validation of Analytical Methods: Definitions and Terminology " & @CRLF & _ "(CPMP/ICH/381/95 - adopted Nov. 94) " & @CRLF & _ "− 3AQ14A: Validation of Analytical Procedures: Definition and Terminology - EUDRALEX Volume 3A " & @CRLF & _ "− 3AQ13A: Validation of Analytical Procedures: Methodology - EUDRALEX Volume 3A " & @CRLF & _ "3.2.P.4.4. Justification of Specifications " Local $aArray = StringRegExp($sString, $sRegex, $STR_REGEXPARRAYFULLMATCH) ; Present the entire match result _ArrayDisplay($aArray, "Result")

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 AutoIt, please visit: https://www.autoitscript.com/autoit3/docs/functions/StringRegExp.htm