regex101: PCRE (Legacy) Match Workspace

Comment:https://stackoverflow.com/questions/15532252/why-is-reg-being-rendered-as-without-the-bounding-semicolon

& the literal text &

1st AlternativeAElig

AEligthe literal text AElig (case sensitive)

2nd AlternativeAMP

AMPthe literal text AMP (case sensitive)

3rd AlternativeAacute

Aacutethe literal text Aacute (case sensitive)

4th AlternativeAcirc

Acircthe literal text Acirc (case sensitive)

5th AlternativeAgrave

Agravethe literal text Agrave (case sensitive)

6th AlternativeAring

Aringthe literal text Aring (case sensitive)

7th AlternativeAtilde

Atildethe literal text Atilde (case sensitive)

8th AlternativeAuml

Aumlthe literal text Auml (case sensitive)

9th AlternativeCOPY

COPYthe literal text COPY (case sensitive)

10th AlternativeCcedil

Ccedilthe literal text Ccedil (case sensitive)

11th AlternativeETH

ETHthe literal text ETH (case sensitive)

12th AlternativeEacute

Eacutethe literal text Eacute (case sensitive)

13th AlternativeEcirc

Ecircthe literal text Ecirc (case sensitive)

14th AlternativeEgrave

Egravethe literal text Egrave (case sensitive)

15th AlternativeEuml

Eumlthe literal text Euml (case sensitive)

16th AlternativeGT

GTthe literal text GT (case sensitive)

17th AlternativeIacute

Iacutethe literal text Iacute (case sensitive)

18th AlternativeIcirc

Icircthe literal text Icirc (case sensitive)

19th AlternativeIgrave

Igravethe literal text Igrave (case sensitive)

20th AlternativeIuml

Iumlthe literal text Iuml (case sensitive)

21st AlternativeLT

LTthe literal text LT (case sensitive)

22nd AlternativeNtilde

Ntildethe literal text Ntilde (case sensitive)

23rd AlternativeOacute

24th AlternativeOcirc

25th AlternativeOgrave

26th AlternativeOslash

27th AlternativeOtilde

28th AlternativeOuml

29th AlternativeQUOT

30th AlternativeREG

31st AlternativeTHORN

32nd AlternativeUacute

33rd AlternativeUcirc

34th AlternativeUgrave

35th AlternativeUuml

36th AlternativeYacute

37th Alternativeaacute

38th Alternativeacirc

39th Alternativeacute

40th Alternativeaelig

41st Alternativeagrave

42nd Alternativeamp

43rd Alternativearing

44th Alternativeatilde

45th Alternativeauml

46th Alternativebrvbar

47th Alternativeccedil

48th Alternativecedil

49th Alternativecent

50th Alternativecopy

51st Alternativecurren

52nd Alternativedeg

53rd Alternativedivide

54th Alternativeeacute

55th Alternativeecirc

56th Alternativeegrave

57th Alternativeeth

58th Alternativeeuml

59th Alternativefrac12

60th Alternativefrac14

61st Alternativefrac34

62nd Alternativegt

63rd Alternativeiacute

64th Alternativeicirc

65th Alternativeiexcl

66th Alternativeigrave

67th Alternativeiquest

68th Alternativeiuml

69th Alternativelaquo

70th Alternativelt

71st Alternativemacr

72nd Alternativemicro

73rd Alternativemiddot

74th Alternativenbsp

75th Alternativenot

76th Alternativentilde

77th Alternativeoacute

78th Alternativeocirc

79th Alternativeograve

80th Alternativeordf

81st Alternativeordm

82nd Alternativeoslash

83rd Alternativeotilde

84th Alternativeouml

85th Alternativepara

86th Alternativeplusmn

87th Alternativepound

88th Alternativequot

89th Alternativeraquo

90th Alternativereg

91st Alternativesect

92nd Alternativeshy

93rd Alternativesup1

94th Alternativesup2

95th Alternativesup3

96th Alternativeszlig

97th Alternativethorn

98th Alternativetimes

99th Alternativeuacute

100th Alternativeucirc

101st Alternativeugrave

102nd Alternativeuml

103rd Alternativeuuml

104th Alternativeyacute

105th Alternativeyen

106th Alternativeyuml

Negative Lookahead(?![=_\da-zA-Z])

2nd Alternative (?<name>[a-zA-Z][a-zA-Z\d]++) ;

3rd Alternative \# (?> (?<dec>\d++) | (?<hex>x[\da-fA-F]++) ) ;

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

X modifier: eXtra. A \ followed by a letter with no special meaning causes an error

s modifier: single line. Allows a dot to match line terminators

x modifier: extended. Ignores unescaped whitespace and comments outside character classes

J modifier: Allow duplicate subpattern names

Search reference

Regular Expression

#https://stackoverflow.com/questions/15532252/why-is-reg-being-rendered-as-without-the-bounding-semicolon
&
(?>  (?<name>AElig|AMP|Aacute|Acirc|Agrave|Aring|Atilde|Auml|COPY|Ccedil|ETH|Eacute|Ecirc|Egrave|Euml|GT|Iacute|Icirc|Igrave|Iuml|LT|Ntilde|Oacute|Ocirc|Ograve|Oslash|Otilde|Ouml|QUOT|REG|THORN|Uacute|Ucirc|Ugrave|Uuml|Yacute|aacute|acirc|acute|aelig|agrave|amp|aring|atilde|auml|brvbar|ccedil|cedil|cent|copy|curren|deg|divide|eacute|ecirc|egrave|eth|euml|frac12|frac14|frac34|gt|iacute|icirc|iexcl|igrave|iquest|iuml|laquo|lt|macr|micro|middot|nbsp|not|ntilde|oacute|ocirc|ograve|ordf|ordm|oslash|otilde|ouml|para|plusmn|pound|quot|raquo|reg|sect|shy|sup1|sup2|sup3|szlig|thorn|times|uacute|ucirc|ugrave|uml|uuml|yacute|yen|yuml) (?![=_\da-zA-Z])
  |  (?<name>[a-zA-Z][a-zA-Z\d]++) ;
  |  \# (?>  (?<dec>\d++)
          |  (?<hex>x[\da-fA-F]++)
        ) ;
)

Test String
New

http://foo.com/bar?foo=bar&region=US&register=lowpass&reg_test=fail&trademark=correct
&amp; &lt; &gt; &quot &AElig
&there4; &frac34;
&lArr; &Uuml; &THORN;
&#9; &#12345;
&#x20; &#x02DC; &#xA9; &#x1D306; &#x2603;

Regular Expressions 101

Regular Expression

Test String
New

Substitution
Processing...

Regular Expression

Test StringNew

SubstitutionProcessing...

Test String
New

Substitution
Processing...