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

r"
"
gm

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 = "(?m)\[[+-]?([048]|\d*([02468][048]|[13579][26]))\]" Local $sString = ""[+05620]" // 5620 is divisible by 4 (valid)" & @CRLF & _ ""[+05621]" // 5621 is not divisible by 4 (invalid)" & @CRLF & _ ""[-55622]" // -55622 is not divisible by 4 (invalid)" & @CRLF & _ ""[005623]" // 5623 invalid" & @CRLF & _ ""[005624]" // 5624 valid" & @CRLF & _ ""[-05628]" // valid" & @CRLF & _ ""[005632]" // valid" & @CRLF & _ ""[555636]" // valid" & @CRLF & _ ""[+05640]" // valid" & @CRLF & _ ""[005600]" // valid" & @CRLF & _ ""[8.04]" // invalid" & @CRLF & _ ""[8.00]" // valid" & @CRLF & _ "" & @CRLF & _ ""[-0]"" & @CRLF & _ ""...may be [+002016] will be."" & @CRLF & _ "" & @CRLF & _ ""[+05621]", "[-55622]", " & @CRLF & _ ""[005623]", "[~24]", "[8.04]", " & @CRLF & _ ""No, [2014] isn't a multiple of 4..."" & @CRLF & _ "" & @CRLF & _ ""[0]"" & @CRLF & _ ""[4]"" & @CRLF & _ ""[8]"" & @CRLF & _ ""[12]"" & @CRLF & _ ""[16]"" & @CRLF & _ ""[20]"" & @CRLF & _ ""[24]"" & @CRLF & _ ""[28]"" & @CRLF & _ ""[32]"" & @CRLF & _ ""[36]"" & @CRLF & _ ""[40]"" & @CRLF & _ ""[44]"" & @CRLF & _ ""[48]"" & @CRLF & _ ""[52]"" & @CRLF & _ ""[56]"" & @CRLF & _ ""[60]"" & @CRLF & _ ""[64]"" & @CRLF & _ ""[68]"" & @CRLF & _ ""[72]"" & @CRLF & _ ""[76]"" & @CRLF & _ ""[80]"" & @CRLF & _ ""[84]"" & @CRLF & _ ""[88]"" & @CRLF & _ ""[92]"" & @CRLF & _ ""[96]"" & @CRLF & _ ""[100]"" & @CRLF & _ ""[104]"" & @CRLF & _ ""[108]"" & @CRLF & _ ""[112]"" & @CRLF & _ ""[116]"" & @CRLF & _ ""[120]"" & @CRLF & _ ""[124]"" & @CRLF & _ ""[128]"" & @CRLF & _ "" & @CRLF & _ ""[1]"" & @CRLF & _ ""[2]"" & @CRLF & _ ""[3]"" & @CRLF & _ ""[5]"" & @CRLF & _ ""[6]"" & @CRLF & _ ""[7]"" & @CRLF & _ ""[9]"" & @CRLF & _ ""[10]"" & @CRLF & _ ""[11]"" & @CRLF & _ ""[13]"" & @CRLF & _ ""[14]"" & @CRLF & _ ""[15]"" & @CRLF & _ ""[17]"" & @CRLF & _ ""[18]"" & @CRLF & _ ""[19]"" & @CRLF & _ ""[21]"" & @CRLF & _ ""[22]"" & @CRLF & _ ""[23]"" & @CRLF & _ ""[25]"" & @CRLF & _ ""[26]"" & @CRLF & _ ""[27]"" & @CRLF & _ ""[29]"" & @CRLF & _ ""[30]"" & @CRLF & _ ""[31]"" & @CRLF & _ ""[33]"" & @CRLF & _ ""[34]"" & @CRLF & _ ""[35]"" & @CRLF & _ ""[37]"" & @CRLF & _ ""[38]"" & @CRLF & _ ""[39]"" & @CRLF & _ ""[41]"" & @CRLF & _ ""[42]"" & @CRLF & _ ""[43]"" & @CRLF & _ ""[45]"" & @CRLF & _ ""[46]"" & @CRLF & _ ""[47]"" & @CRLF & _ ""[49]"" & @CRLF & _ ""[50]"" & @CRLF & _ ""[51]"" & @CRLF & _ ""[53]"" & @CRLF & _ ""[54]"" & @CRLF & _ ""[55]"" & @CRLF & _ ""[57]"" & @CRLF & _ ""[58]"" & @CRLF & _ ""[59]"" & @CRLF & _ ""[61]"" & @CRLF & _ ""[62]"" & @CRLF & _ ""[63]"" & @CRLF & _ ""[65]"" & @CRLF & _ ""[66]"" & @CRLF & _ ""[67]"" & @CRLF & _ ""[69]"" & @CRLF & _ ""[70]"" & @CRLF & _ ""[71]"" & @CRLF & _ ""[73]"" & @CRLF & _ ""[74]"" & @CRLF & _ ""[75]"" & @CRLF & _ ""[77]"" & @CRLF & _ ""[78]"" & @CRLF & _ ""[79]"" & @CRLF & _ ""[81]"" & @CRLF & _ ""[82]"" & @CRLF & _ ""[83]"" & @CRLF & _ ""[85]"" & @CRLF & _ ""[86]"" & @CRLF & _ ""[87]"" & @CRLF & _ ""[89]"" & @CRLF & _ ""[90]"" & @CRLF & _ ""[91]"" & @CRLF & _ ""[93]"" & @CRLF & _ ""[94]"" & @CRLF & _ ""[95]"" & @CRLF & _ ""[97]"" & @CRLF & _ ""[98]"" & @CRLF & _ ""[99]"" & @CRLF & _ ""[101]"" & @CRLF & _ ""[102]"" & @CRLF & _ ""[103]"" & @CRLF & _ ""[105]"" & @CRLF & _ ""[106]"" & @CRLF & _ ""[107]"" & @CRLF & _ ""[109]"" & @CRLF & _ ""[110]"" & @CRLF & _ ""[111]"" & @CRLF & _ ""[113]"" & @CRLF & _ ""[114]"" & @CRLF & _ ""[115]"" & @CRLF & _ ""[117]"" & @CRLF & _ ""[118]"" & @CRLF & _ ""[119]"" & @CRLF & _ ""[121]"" & @CRLF & _ ""[122]"" & @CRLF & _ ""[123]"" & @CRLF & _ ""[125]"" & @CRLF & _ ""[126]"" & @CRLF & _ ""[127]"" & @CRLF & _ ""[129]"" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "0" & @CRLF & _ "4" & @CRLF & _ "8" & @CRLF & _ "12" & @CRLF & _ "16" & @CRLF & _ "20" & @CRLF & _ "24" & @CRLF & _ "28" & @CRLF & _ "32" & @CRLF & _ "36" & @CRLF & _ "40" & @CRLF & _ "44" & @CRLF & _ "48" & @CRLF & _ "52" & @CRLF & _ "56" & @CRLF & _ "60" & @CRLF & _ "64" & @CRLF & _ "68" & @CRLF & _ "72" & @CRLF & _ "76" & @CRLF & _ "80" & @CRLF & _ "84" & @CRLF & _ "88" & @CRLF & _ "92" & @CRLF & _ "96" & @CRLF & _ "100" & @CRLF & _ "104" & @CRLF & _ "108" & @CRLF & _ "112" & @CRLF & _ "116" & @CRLF & _ "120" & @CRLF & _ "124" & @CRLF & _ "128" & @CRLF & _ "" & @CRLF & _ "1" & @CRLF & _ "2" & @CRLF & _ "3" & @CRLF & _ "5" & @CRLF & _ "6" & @CRLF & _ "7" & @CRLF & _ "9" & @CRLF & _ "10" & @CRLF & _ "11" & @CRLF & _ "13" & @CRLF & _ "14" & @CRLF & _ "15" & @CRLF & _ "17" & @CRLF & _ "18" & @CRLF & _ "19" & @CRLF & _ "21" & @CRLF & _ "22" & @CRLF & _ "23" & @CRLF & _ "25" & @CRLF & _ "26" & @CRLF & _ "27" & @CRLF & _ "29" & @CRLF & _ "30" & @CRLF & _ "31" & @CRLF & _ "33" & @CRLF & _ "34" & @CRLF & _ "35" & @CRLF & _ "37" & @CRLF & _ "38" & @CRLF & _ "39" & @CRLF & _ "41" & @CRLF & _ "42" & @CRLF & _ "43" & @CRLF & _ "45" & @CRLF & _ "46" & @CRLF & _ "47" & @CRLF & _ "49" & @CRLF & _ "50" & @CRLF & _ "51" & @CRLF & _ "53" & @CRLF & _ "54" & @CRLF & _ "55" & @CRLF & _ "57" & @CRLF & _ "58" & @CRLF & _ "59" & @CRLF & _ "61" & @CRLF & _ "62" & @CRLF & _ "63" & @CRLF & _ "65" & @CRLF & _ "66" & @CRLF & _ "67" & @CRLF & _ "69" & @CRLF & _ "70" & @CRLF & _ "71" & @CRLF & _ "73" & @CRLF & _ "74" & @CRLF & _ "75" & @CRLF & _ "77" & @CRLF & _ "78" & @CRLF & _ "79" & @CRLF & _ "81" & @CRLF & _ "82" & @CRLF & _ "83" & @CRLF & _ "85" & @CRLF & _ "86" & @CRLF & _ "87" & @CRLF & _ "89" & @CRLF & _ "90" & @CRLF & _ "91" & @CRLF & _ "93" & @CRLF & _ "94" & @CRLF & _ "95" & @CRLF & _ "97" & @CRLF & _ "98" & @CRLF & _ "99" & @CRLF & _ "101" & @CRLF & _ "102" & @CRLF & _ "103" & @CRLF & _ "105" & @CRLF & _ "106" & @CRLF & _ "107" & @CRLF & _ "109" & @CRLF & _ "110" & @CRLF & _ "111" & @CRLF & _ "113" & @CRLF & _ "114" & @CRLF & _ "115" & @CRLF & _ "117" & @CRLF & _ "118" & @CRLF & _ "119" & @CRLF & _ "121" & @CRLF & _ "122" & @CRLF & _ "123" & @CRLF & _ "125" & @CRLF & _ "126" & @CRLF & _ "127" & @CRLF & _ "129" Local $aArray = StringRegExp($sString, $sRegex, $STR_REGEXPARRAYGLOBALFULLMATCH) Local $aFullArray[0] For $i = 0 To UBound($aArray) -1 _ArrayConcatenate($aFullArray, $aArray[$i]) Next $aArray = $aFullArray ; Present the entire match result _ArrayDisplay($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