Regular Expressions 101

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  • 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

/
/
gs

Test String

Code Generator

Language

Generated Code

use strict; my $str = 'http://www.html-entities.org/ Encode & decode HTML entities Convert special characters to HTML entities homeprint reference ingnore HTML tags " &#34; &quot; quotation mark \' &#39; &apos; apostrophe & &#38; &amp; ampersand < &#60; &lt; less-than > &#62; &gt; greater-than &#160; &nbsp; non-breaking space ¡ &#161; &iexcl; inverted exclamation mark ¢ &#162; &cent; cent £ &#163; &pound; pound ¤ &#164; &curren; currency ¥ &#165; &yen; yen ¦ &#166; &brvbar; broken vertical bar § &#167; &sect; section ¨ &#168; &uml; spacing diaeresis © &#169; &copy; copyright ª &#170; &ordf; feminine ordinal indicator « &#171; &laquo; angle quotation mark (left) ¬ &#172; &not; negation &#173; &shy; soft hyphen ® &#174; &reg; registered trademark ¯ &#175; &macr; spacing macron ° &#176; &deg; degree ± &#177; &plusmn; plus-or-minus ² &#178; &sup2; superscript 2 ³ &#179; &sup3; superscript 3 ´ &#180; &acute; spacing acute µ &#181; &micro; micro ¶ &#182; &para; paragraph · &#183; &middot; middle dot ¸ &#184; &cedil; spacing cedilla ¹ &#185; &sup1; superscript 1 º &#186; &ordm; masculine ordinal indicator » &#187; &raquo; angle quotation mark (right) ¼ &#188; &frac14; fraction 1/4 ½ &#189; &frac12; fraction 1/2 ¾ &#190; &frac34; fraction 3/4 ¿ &#191; &iquest; inverted question mark × &#215; &times; multiplication ÷ &#247; &divide; division À &#192; &Agrave; capital a, grave accent Á &#193; &Aacute; capital a, acute accent  &#194; &Acirc; capital a, circumflex accent à &#195; &Atilde; capital a, tilde Ä &#196; &Auml; capital a, umlaut mark Å &#197; &Aring; capital a, ring Æ &#198; &AElig; capital ae Ç &#199; &Ccedil; capital c, cedilla È &#200; &Egrave; capital e, grave accent É &#201; &Eacute; capital e, acute accent Ê &#202; &Ecirc; capital e, circumflex accent Ë &#203; &Euml; capital e, umlaut mark Ì &#204; &Igrave; capital i, grave accent Í &#205; &Iacute; capital i, acute accent Î &#206; &Icirc; capital i, circumflex accent Ï &#207; &Iuml; capital i, umlaut mark Ð &#208; &ETH; capital eth, Icelandic Ñ &#209; &Ntilde; capital n, tilde Ò &#210; &Ograve; capital o, grave accent Ó &#211; &Oacute; capital o, acute accent Ô &#212; &Ocirc; capital o, circumflex accent Õ &#213; &Otilde; capital o, tilde Ö &#214; &Ouml; capital o, umlaut mark Ø &#216; &Oslash; capital o, slash Ù &#217; &Ugrave; capital u, grave accent Ú &#218; &Uacute; capital u, acute accent Û &#219; &Ucirc; capital u, circumflex accent Ü &#220; &Uuml; capital u, umlaut mark Ý &#221; &Yacute; capital y, acute accent Þ &#222; &THORN; capital THORN, Icelandic ß &#223; &szlig; small sharp s, German à &#224; &agrave; small a, grave accent á &#225; &aacute; small a, acute accent â &#226; &acirc; small a, circumflex accent ã &#227; &atilde; small a, tilde ä &#228; &auml; small a, umlaut mark å &#229; &aring; small a, ring æ &#230; &aelig; small ae ç &#231; &ccedil; small c, cedilla è &#232; &egrave; small e, grave accent é &#233; &eacute; small e, acute accent ê &#234; &ecirc; small e, circumflex accent ë &#235; &euml; small e, umlaut mark ì &#236; &igrave; small i, grave accent í &#237; &iacute; small i, acute accent î &#238; &icirc; small i, circumflex accent ï &#239; &iuml; small i, umlaut mark ð &#240; &eth; small eth, Icelandic ñ &#241; &ntilde; small n, tilde ò &#242; &ograve; small o, grave accent ó &#243; &oacute; small o, acute accent ô &#244; &ocirc; small o, circumflex accent õ &#245; &otilde; small o, tilde ö &#246; &ouml; small o, umlaut mark ø &#248; &oslash; small o, slash ù &#249; &ugrave; small u, grave accent ú &#250; &uacute; small u, acute accent û &#251; &ucirc; small u, circumflex accent ü &#252; &uuml; small u, umlaut mark ý &#253; &yacute; small y, acute accent þ &#254; &thorn; small thorn, Icelandic ÿ &#255; &yuml; small y, umlaut mark ∀ &#8704; &forall; for all ∂ &#8706; &part; part ∃ &#8707; &exist; exists ∅ &#8709; &empty; empty ∇ &#8711; &nabla; nabla ∈ &#8712; &isin; isin ∉ &#8713; &notin; notin ∋ &#8715; &ni; ni ∏ &#8719; &prod; prod ∑ &#8721; &sum; sum − &#8722; &minus; minus ∗ &#8727; &lowast; lowast √ &#8730; &radic; square root ∝ &#8733; &prop; proportional to ∞ &#8734; &infin; infinity ∠ &#8736; &ang; angle ∧ &#8743; &and; and ∨ &#8744; &or; or ∩ &#8745; &cap; cap ∪ &#8746; &cup; cup ∫ &#8747; &int; integral ∴ &#8756; &there4; therefore ∼ &#8764; &sim; similar to ≅ &#8773; &cong; congruent to ≈ &#8776; &asymp; almost equal ≠ &#8800; &ne; not equal ≡ &#8801; &equiv; equivalent ≤ &#8804; &le; less or equal ≥ &#8805; &ge; greater or equal ⊂ &#8834; &sub; subset of ⊃ &#8835; &sup; superset of ⊄ &#8836; &nsub; not subset of ⊆ &#8838; &sube; subset or equal ⊇ &#8839; &supe; superset or equal ⊕ &#8853; &oplus; circled plus ⊗ &#8855; &otimes; circled times ⊥ &#8869; &perp; perpendicular ⋅ &#8901; &sdot; dot operator Α &#913; &Alpha; Alpha Β &#914; &Beta; Beta Γ &#915; &Gamma; Gamma Δ &#916; &Delta; Delta Ε &#917; &Epsilon; Epsilon Ζ &#918; &Zeta; Zeta Η &#919; &Eta; Eta Θ &#920; &Theta; Theta Ι &#921; &Iota; Iota Κ &#922; &Kappa; Kappa Λ &#923; &Lambda; Lambda Μ &#924; &Mu; Mu Ν &#925; &Nu; Nu Ξ &#926; &Xi; Xi Ο &#927; &Omicron; Omicron Π &#928; &Pi; Pi Ρ &#929; &Rho; Rho ς &#207; &sigmaf; Sigmaf Σ &#931; &Sigma; Sigma Τ &#932; &Tau; Tau Υ &#933; &Upsilon; Upsilon Φ &#934; &Phi; Phi Χ &#935; &Chi; Chi Ψ &#936; &Psi; Psi Ω &#937; &Omega; Omega α &#945; &alpha; alpha β &#946; &beta; beta γ &#947; &gamma; gamma δ &#948; &delta; delta ε &#949; &epsilon; epsilon ζ &#950; &zeta; zeta η &#951; &eta; eta θ &#952; &theta; theta ι &#953; &iota; iota κ &#954; &kappa; kappa λ &#955; &lambda; lambda μ &#956; &mu; mu ν &#957; &nu; nu ξ &#958; &xi; xi ο &#959; &omicron; omicron π &#960; &pi; pi ρ &#961; &rho; rho ς &#962; &sigmaf; sigmaf σ &#963; &sigma; sigma τ &#964; &tau; tau υ &#965; &upsilon; upsilon φ &#966; &phi; phi χ &#967; &chi; chi ψ &#968; &psi; psi ω &#969; &omega; omega ϑ &#977; &thetasym; theta symbol ϒ &#978; &upsih; upsilon symbol ϖ &#982; &piv; pi symbol Œ &#338; &OElig; capital ligature OE œ &#339; &oelig; small ligature oe Š &#352; &Scaron; capital S with caron š &#353; &scaron; small S with caron Ÿ &#376; &Yuml; capital Y with diaeres ƒ &#402; &fnof; f with hook ˆ &#710; &circ; modifier letter circumflex accent ˜ &#732; &tilde; small tilde   &#8194; &ensp; en space   &#8195; &emsp; em space   &#8201; &thinsp; thin space ‌ &#8204; &zwnj; zero width non-joiner ‍ &#8205; &zwj; zero width joiner ‎ &#8206; &lrm; left-to-right mark ‏ &#8207; &rlm; right-to-left mark – &#8211; &ndash; en dash — &#8212; &mdash; em dash ‘ &#8216; &lsquo; left single quotation mark ’ &#8217; &rsquo; right single quotation mark ‚ &#8218; &sbquo; single low-9 quotation mark “ &#8220; &ldquo; left double quotation mark ” &#8221; &rdquo; right double quotation mark „ &#8222; &bdquo; double low-9 quotation mark † &#8224; &dagger; dagger ‡ &#8225; &Dagger; double dagger • &#8226; &bull; bullet … &#8230; &hellip; horizontal ellipsis ‰ &#8240; &permil; per mille ′ &#8242; &prime; minutes ″ &#8243; &Prime; seconds ‹ &#8249; &lsaquo; single left angle quotation › &#8250; &rsaquo; single right angle quotation ‾ &#8254; &oline; overline € &#8364; &euro; euro ™ &#8482; or &trade; trademark ← &#8592; &larr; left arrow ↑ &#8593; &uarr; up arrow → &#8594; &rarr; right arrow ↓ &#8595; &darr; down arrow ↔ &#8596; &harr; left right arrow ↵ &#8629; &crarr; carriage return arrow ⌈ &#8968; &lceil; left ceiling ⌉ &#8969; &rceil; right ceiling ⌊ &#8970; &lfloor; left floor ⌋ &#8971; &rfloor; right floor ◊ &#9674; &loz; lozenge ♠ &#9824; &spades; spade ♣ &#9827; &clubs; club ♥ &#9829; &hearts; heart ♦ &#9830; &diams; diamond ⁄ &#8260; &frasl; fraction slash ℘ &#8472; &weierp; script capital P = power set = Weierstrass p ℑ &#8465; &image; black-letter capital I = imaginary part ℜ &#8476; &real; black-letter capital R = real part symbol ℵ &#8501; &alefsym; alef symbol = first transfinite cardinal ⇐ &#8656; &lArr; leftwards double arrow ⇑ &#8657; &uArr; upwards double arrow ⇒ &#8658; &rArr; rightwards double arrow ⇓ &#8659; &dArr; downwards double arrow ⇔ &#8660; &hArr; left right double arrow ⟨ &#9001; &lang; left-pointing angle bracket = bra ⟩ &#9002; &rang; right-pointing angle bracket = ket A Character Entity Reference is an encoding of a character in several characters from a limited character set. The name Character Entity Reference is used for document structuring technologies of the World Wide Web Consortium, such as HTML, XML and XHTML. Encode & decode HTML entities Convert special characters to HTML entities homeprint reference ingnore HTML tags " &#34; &quot; quotation mark \' &#39; &apos; apostrophe & &#38; &amp; ampersand < &#60; &lt; less-than > &#62; &gt; greater-than &#160; &nbsp; non-breaking space ¡ &#161; &iexcl; inverted exclamation mark ¢ &#162; &cent; cent £ &#163; &pound; pound ¤ &#164; &curren; currency ¥ &#165; &yen; yen ¦ &#166; &brvbar; broken vertical bar § &#167; &sect; section ¨ &#168; &uml; spacing diaeresis © &#169; &copy; copyright ª &#170; &ordf; feminine ordinal indicator « &#171; &laquo; angle quotation mark (left) ¬ &#172; &not; negation &#173; &shy; soft hyphen ® &#174; &reg; registered trademark ¯ &#175; &macr; spacing macron ° &#176; &deg; degree ± &#177; &plusmn; plus-or-minus ² &#178; &sup2; superscript 2 ³ &#179; &sup3; superscript 3 ´ &#180; &acute; spacing acute µ &#181; &micro; micro ¶ &#182; &para; paragraph · &#183; &middot; middle dot ¸ &#184; &cedil; spacing cedilla ¹ &#185; &sup1; superscript 1 º &#186; &ordm; masculine ordinal indicator » &#187; &raquo; angle quotation mark (right) ¼ &#188; &frac14; fraction 1/4 ½ &#189; &frac12; fraction 1/2 ¾ &#190; &frac34; fraction 3/4 ¿ &#191; &iquest; inverted question mark × &#215; &times; multiplication ÷ &#247; &divide; division À &#192; &Agrave; capital a, grave accent Á &#193; &Aacute; capital a, acute accent  &#194; &Acirc; capital a, circumflex accent à &#195; &Atilde; capital a, tilde Ä &#196; &Auml; capital a, umlaut mark Å &#197; &Aring; capital a, ring Æ &#198; &AElig; capital ae Ç &#199; &Ccedil; capital c, cedilla È &#200; &Egrave; capital e, grave accent É &#201; &Eacute; capital e, acute accent Ê &#202; &Ecirc; capital e, circumflex accent Ë &#203; &Euml; capital e, umlaut mark Ì &#204; &Igrave; capital i, grave accent Í &#205; &Iacute; capital i, acute accent Î &#206; &Icirc; capital i, circumflex accent Ï &#207; &Iuml; capital i, umlaut mark Ð &#208; &ETH; capital eth, Icelandic Ñ &#209; &Ntilde; capital n, tilde Ò &#210; &Ograve; capital o, grave accent Ó &#211; &Oacute; capital o, acute accent Ô &#212; &Ocirc; capital o, circumflex accent Õ &#213; &Otilde; capital o, tilde Ö &#214; &Ouml; capital o, umlaut mark Ø &#216; &Oslash; capital o, slash Ù &#217; &Ugrave; capital u, grave accent Ú &#218; &Uacute; capital u, acute accent Û &#219; &Ucirc; capital u, circumflex accent Ü &#220; &Uuml; capital u, umlaut mark Ý &#221; &Yacute; capital y, acute accent Þ &#222; &THORN; capital THORN, Icelandic ß &#223; &szlig; small sharp s, German à &#224; &agrave; small a, grave accent á &#225; &aacute; small a, acute accent â &#226; &acirc; small a, circumflex accent ã &#227; &atilde; small a, tilde ä &#228; &auml; small a, umlaut mark å &#229; &aring; small a, ring æ &#230; &aelig; small ae ç &#231; &ccedil; small c, cedilla è &#232; &egrave; small e, grave accent é &#233; &eacute; small e, acute accent ê &#234; &ecirc; small e, circumflex accent ë &#235; &euml; small e, umlaut mark ì &#236; &igrave; small i, grave accent í &#237; &iacute; small i, acute accent î &#238; &icirc; small i, circumflex accent ï &#239; &iuml; small i, umlaut mark ð &#240; &eth; small eth, Icelandic ñ &#241; &ntilde; small n, tilde ò &#242; &ograve; small o, grave accent ó &#243; &oacute; small o, acute accent ô &#244; &ocirc; small o, circumflex accent õ &#245; &otilde; small o, tilde ö &#246; &ouml; small o, umlaut mark ø &#248; &oslash; small o, slash ù &#249; &ugrave; small u, grave accent ú &#250; &uacute; small u, acute accent û &#251; &ucirc; small u, circumflex accent ü &#252; &uuml; small u, umlaut mark ý &#253; &yacute; small y, acute accent þ &#254; &thorn; small thorn, Icelandic ÿ &#255; &yuml; small y, umlaut mark ∀ &#8704; &forall; for all ∂ &#8706; &part; part ∃ &#8707; &exist; exists ∅ &#8709; &empty; empty ∇ &#8711; &nabla; nabla ∈ &#8712; &isin; isin ∉ &#8713; &notin; notin ∋ &#8715; &ni; ni ∏ &#8719; &prod; prod ∑ &#8721; &sum; sum − &#8722; &minus; minus ∗ &#8727; &lowast; lowast √ &#8730; &radic; square root ∝ &#8733; &prop; proportional to ∞ &#8734; &infin; infinity ∠ &#8736; &ang; angle ∧ &#8743; &and; and ∨ &#8744; &or; or ∩ &#8745; &cap; cap ∪ &#8746; &cup; cup ∫ &#8747; &int; integral ∴ &#8756; &there4; therefore ∼ &#8764; &sim; similar to ≅ &#8773; &cong; congruent to ≈ &#8776; &asymp; almost equal ≠ &#8800; &ne; not equal ≡ &#8801; &equiv; equivalent ≤ &#8804; &le; less or equal ≥ &#8805; &ge; greater or equal ⊂ &#8834; &sub; subset of ⊃ &#8835; &sup; superset of ⊄ &#8836; &nsub; not subset of ⊆ &#8838; &sube; subset or equal ⊇ &#8839; &supe; superset or equal ⊕ &#8853; &oplus; circled plus ⊗ &#8855; &otimes; circled times ⊥ &#8869; &perp; perpendicular ⋅ &#8901; &sdot; dot operator Α &#913; &Alpha; Alpha Β &#914; &Beta; Beta Γ &#915; &Gamma; Gamma Δ &#916; &Delta; Delta Ε &#917; &Epsilon; Epsilon Ζ &#918; &Zeta; Zeta Η &#919; &Eta; Eta Θ &#920; &Theta; Theta Ι &#921; &Iota; Iota Κ &#922; &Kappa; Kappa Λ &#923; &Lambda; Lambda Μ &#924; &Mu; Mu Ν &#925; &Nu; Nu Ξ &#926; &Xi; Xi Ο &#927; &Omicron; Omicron Π &#928; &Pi; Pi Ρ &#929; &Rho; Rho ς &#207; &sigmaf; Sigmaf Σ &#931; &Sigma; Sigma Τ &#932; &Tau; Tau Υ &#933; &Upsilon; Upsilon Φ &#934; &Phi; Phi Χ &#935; &Chi; Chi Ψ &#936; &Psi; Psi Ω &#937; &Omega; Omega α &#945; &alpha; alpha β &#946; &beta; beta γ &#947; &gamma; gamma δ &#948; &delta; delta ε &#949; &epsilon; epsilon ζ &#950; &zeta; zeta η &#951; &eta; eta θ &#952; &theta; theta ι &#953; &iota; iota κ &#954; &kappa; kappa λ &#955; &lambda; lambda μ &#956; &mu; mu ν &#957; &nu; nu ξ &#958; &xi; xi ο &#959; &omicron; omicron π &#960; &pi; pi ρ &#961; &rho; rho ς &#962; &sigmaf; sigmaf σ &#963; &sigma; sigma τ &#964; &tau; tau υ &#965; &upsilon; upsilon φ &#966; &phi; phi χ &#967; &chi; chi ψ &#968; &psi; psi ω &#969; &omega; omega ϑ &#977; &thetasym; theta symbol ϒ &#978; &upsih; upsilon symbol ϖ &#982; &piv; pi symbol Œ &#338; &OElig; capital ligature OE œ &#339; &oelig; small ligature oe Š &#352; &Scaron; capital S with caron š &#353; &scaron; small S with caron Ÿ &#376; &Yuml; capital Y with diaeres ƒ &#402; &fnof; f with hook ˆ &#710; &circ; modifier letter circumflex accent ˜ &#732; &tilde; small tilde   &#8194; &ensp; en space   &#8195; &emsp; em space   &#8201; &thinsp; thin space ‌ &#8204; &zwnj; zero width non-joiner ‍ &#8205; &zwj; zero width joiner ‎ &#8206; &lrm; left-to-right mark ‏ &#8207; &rlm; right-to-left mark – &#8211; &ndash; en dash — &#8212; &mdash; em dash ‘ &#8216; &lsquo; left single quotation mark ’ &#8217; &rsquo; right single quotation mark ‚ &#8218; &sbquo; single low-9 quotation mark “ &#8220; &ldquo; left double quotation mark ” &#8221; &rdquo; right double quotation mark „ &#8222; &bdquo; double low-9 quotation mark † &#8224; &dagger; dagger ‡ &#8225; &Dagger; double dagger • &#8226; &bull; bullet … &#8230; &hellip; horizontal ellipsis ‰ &#8240; &permil; per mille ′ &#8242; &prime; minutes ″ &#8243; &Prime; seconds ‹ &#8249; &lsaquo; single left angle quotation › &#8250; &rsaquo; single right angle quotation ‾ &#8254; &oline; overline € &#8364; &euro; euro ™ &#8482; or &trade; trademark ← &#8592; &larr; left arrow ↑ &#8593; &uarr; up arrow → &#8594; &rarr; right arrow ↓ &#8595; &darr; down arrow ↔ &#8596; &harr; left right arrow ↵ &#8629; &crarr; carriage return arrow ⌈ &#8968; &lceil; left ceiling ⌉ &#8969; &rceil; right ceiling ⌊ &#8970; &lfloor; left floor ⌋ &#8971; &rfloor; right floor ◊ &#9674; &loz; lozenge ♠ &#9824; &spades; spade ♣ &#9827; &clubs; club ♥ &#9829; &hearts; heart ♦ &#9830; &diams; diamond ⁄ &#8260; &frasl; fraction slash ℘ &#8472; &weierp; script capital P = power set = Weierstrass p ℑ &#8465; &image; black-letter capital I = imaginary part ℜ &#8476; &real; black-letter capital R = real part symbol ℵ &#8501; &alefsym; alef symbol = first transfinite cardinal ⇐ &#8656; &lArr; leftwards double arrow ⇑ &#8657; &uArr; upwards double arrow ⇒ &#8658; &rArr; rightwards double arrow ⇓ &#8659; &dArr; downwards double arrow ⇔ &#8660; &hArr; left right double arrow ⟨ &#9001; &lang; left-pointing angle bracket = bra ⟩ &#9002; &rang; right-pointing angle bracket = ket A Character Entity Reference is an encoding of a character in several characters from a limited character set. The name Character Entity Reference is used for document structuring technologies of the World Wide Web Consortium, such as HTML, XML and XHTML. ShareThis Copy and PasteEncode & decode HTML entities Convert special characters to HTML entities homeprint reference ingnore HTML tags " &#34; &quot; quotation mark \' &#39; &apos; apostrophe & &#38; &amp; ampersand < &#60; &lt; less-than > &#62; &gt; greater-than &#160; &nbsp; non-breaking space ¡ &#161; &iexcl; inverted exclamation mark ¢ &#162; &cent; cent £ &#163; &pound; pound ¤ &#164; &curren; currency ¥ &#165; &yen; yen ¦ &#166; &brvbar; broken vertical bar § &#167; &sect; section ¨ &#168; &uml; spacing diaeresis © &#169; &copy; copyright ª &#170; &ordf; feminine ordinal indicator « &#171; &laquo; angle quotation mark (left) ¬ &#172; &not; negation &#173; &shy; soft hyphen ® &#174; &reg; registered trademark ¯ &#175; &macr; spacing macron ° &#176; &deg; degree ± &#177; &plusmn; plus-or-minus ² &#178; &sup2; superscript 2 ³ &#179; &sup3; superscript 3 ´ &#180; &acute; spacing acute µ &#181; &micro; micro ¶ &#182; &para; paragraph · &#183; &middot; middle dot ¸ &#184; &cedil; spacing cedilla ¹ &#185; &sup1; superscript 1 º &#186; &ordm; masculine ordinal indicator » &#187; &raquo; angle quotation mark (right) ¼ &#188; &frac14; fraction 1/4 ½ &#189; &frac12; fraction 1/2 ¾ &#190; &frac34; fraction 3/4 ¿ &#191; &iquest; inverted question mark × &#215; &times; multiplication ÷ &#247; &divide; division À &#192; &Agrave; capital a, grave accent Á &#193; &Aacute; capital a, acute accent  &#194; &Acirc; capital a, circumflex accent à &#195; &Atilde; capital a, tilde Ä &#196; &Auml; capital a, umlaut mark Å &#197; &Aring; capital a, ring Æ &#198; &AElig; capital ae Ç &#199; &Ccedil; capital c, cedilla È &#200; &Egrave; capital e, grave accent É &#201; &Eacute; capital e, acute accent Ê &#202; &Ecirc; capital e, circumflex accent Ë &#203; &Euml; capital e, umlaut mark Ì &#204; &Igrave; capital i, grave accent Í &#205; &Iacute; capital i, acute accent Î &#206; &Icirc; capital i, circumflex accent Ï &#207; &Iuml; capital i, umlaut mark Ð &#208; &ETH; capital eth, Icelandic Ñ &#209; &Ntilde; capital n, tilde Ò &#210; &Ograve; capital o, grave accent Ó &#211; &Oacute; capital o, acute accent Ô &#212; &Ocirc; capital o, circumflex accent Õ &#213; &Otilde; capital o, tilde Ö &#214; &Ouml; capital o, umlaut mark Ø &#216; &Oslash; capital o, slash Ù &#217; &Ugrave; capital u, grave accent Ú &#218; &Uacute; capital u, acute accent Û &#219; &Ucirc; capital u, circumflex accent Ü &#220; &Uuml; capital u, umlaut mark Ý &#221; &Yacute; capital y, acute accent Þ &#222; &THORN; capital THORN, Icelandic ß &#223; &szlig; small sharp s, German à &#224; &agrave; small a, grave accent á &#225; &aacute; small a, acute accent â &#226; &acirc; small a, circumflex accent ã &#227; &atilde; small a, tilde ä &#228; &auml; small a, umlaut mark å &#229; &aring; small a, ring æ &#230; &aelig; small ae ç &#231; &ccedil; small c, cedilla è &#232; &egrave; small e, grave accent é &#233; &eacute; small e, acute accent ê &#234; &ecirc; small e, circumflex accent ë &#235; &euml; small e, umlaut mark ì &#236; &igrave; small i, grave accent í &#237; &iacute; small i, acute accent î &#238; &icirc; small i, circumflex accent ï &#239; &iuml; small i, umlaut mark ð &#240; &eth; small eth, Icelandic ñ &#241; &ntilde; small n, tilde ò &#242; &ograve; small o, grave accent ó &#243; &oacute; small o, acute accent ô &#244; &ocirc; small o, circumflex accent õ &#245; &otilde; small o, tilde ö &#246; &ouml; small o, umlaut mark ø &#248; &oslash; small o, slash ù &#249; &ugrave; small u, grave accent ú &#250; &uacute; small u, acute accent û &#251; &ucirc; small u, circumflex accent ü &#252; &uuml; small u, umlaut mark ý &#253; &yacute; small y, acute accent þ &#254; &thorn; small thorn, Icelandic ÿ &#255; &yuml; small y, umlaut mark ∀ &#8704; &forall; for all ∂ &#8706; &part; part ∃ &#8707; &exist; exists ∅ &#8709; &empty; empty ∇ &#8711; &nabla; nabla ∈ &#8712; &isin; isin ∉ &#8713; &notin; notin ∋ &#8715; &ni; ni ∏ &#8719; &prod; prod ∑ &#8721; &sum; sum − &#8722; &minus; minus ∗ &#8727; &lowast; lowast √ &#8730; &radic; square root ∝ &#8733; &prop; proportional to ∞ &#8734; &infin; infinity ∠ &#8736; &ang; angle ∧ &#8743; &and; and ∨ &#8744; &or; or ∩ &#8745; &cap; cap ∪ &#8746; &cup; cup ∫ &#8747; &int; integral ∴ &#8756; &there4; therefore ∼ &#8764; &sim; similar to ≅ &#8773; &cong; congruent to ≈ &#8776; &asymp; almost equal ≠ &#8800; &ne; not equal ≡ &#8801; &equiv; equivalent ≤ &#8804; &le; less or equal ≥ &#8805; &ge; greater or equal ⊂ &#8834; &sub; subset of ⊃ &#8835; &sup; superset of ⊄ &#8836; &nsub; not subset of ⊆ &#8838; &sube; subset or equal ⊇ &#8839; &supe; superset or equal ⊕ &#8853; &oplus; circled plus ⊗ &#8855; &otimes; circled times ⊥ &#8869; &perp; perpendicular ⋅ &#8901; &sdot; dot operator Α &#913; &Alpha; Alpha Β &#914; &Beta; Beta Γ &#915; &Gamma; Gamma Δ &#916; &Delta; Delta Ε &#917; &Epsilon; Epsilon Ζ &#918; &Zeta; Zeta Η &#919; &Eta; Eta Θ &#920; &Theta; Theta Ι &#921; &Iota; Iota Κ &#922; &Kappa; Kappa Λ &#923; &Lambda; Lambda Μ &#924; &Mu; Mu Ν &#925; &Nu; Nu Ξ &#926; &Xi; Xi Ο &#927; &Omicron; Omicron Π &#928; &Pi; Pi Ρ &#929; &Rho; Rho ς &#207; &sigmaf; Sigmaf Σ &#931; &Sigma; Sigma Τ &#932; &Tau; Tau Υ &#933; &Upsilon; Upsilon Φ &#934; &Phi; Phi Χ &#935; &Chi; Chi Ψ &#936; &Psi; Psi Ω &#937; &Omega; Omega α &#945; &alpha; alpha β &#946; &beta; beta γ &#947; &gamma; gamma δ &#948; &delta; delta ε &#949; &epsilon; epsilon ζ &#950; &zeta; zeta η &#951; &eta; eta θ &#952; &theta; theta ι &#953; &iota; iota κ &#954; &kappa; kappa λ &#955; &lambda; lambda μ &#956; &mu; mu ν &#957; &nu; nu ξ &#958; &xi; xi ο &#959; &omicron; omicron π &#960; &pi; pi ρ &#961; &rho; rho ς &#962; &sigmaf; sigmaf σ &#963; &sigma; sigma τ &#964; &tau; tau υ &#965; &upsilon; upsilon φ &#966; &phi; phi χ &#967; &chi; chi ψ &#968; &psi; psi ω &#969; &omega; omega ϑ &#977; &thetasym; theta symbol ϒ &#978; &upsih; upsilon symbol ϖ &#982; &piv; pi symbol Œ &#338; &OElig; capital ligature OE œ &#339; &oelig; small ligature oe Š &#352; &Scaron; capital S with caron š &#353; &scaron; small S with caron Ÿ &#376; &Yuml; capital Y with diaeres ƒ &#402; &fnof; f with hook ˆ &#710; &circ; modifier letter circumflex accent ˜ &#732; &tilde; small tilde   &#8194; &ensp; en space   &#8195; &emsp; em space   &#8201; &thinsp; thin space ‌ &#8204; &zwnj; zero width non-joiner ‍ &#8205; &zwj; zero width joiner ‎ &#8206; &lrm; left-to-right mark ‏ &#8207; &rlm; right-to-left mark – &#8211; &ndash; en dash — &#8212; &mdash; em dash ‘ &#8216; &lsquo; left single quotation mark ’ &#8217; &rsquo; right single quotation mark ‚ &#8218; &sbquo; single low-9 quotation mark “ &#8220; &ldquo; left double quotation mark ” &#8221; &rdquo; right double quotation mark „ &#8222; &bdquo; double low-9 quotation mark † &#8224; &dagger; dagger ‡ &#8225; &Dagger; double dagger • &#8226; &bull; bullet … &#8230; &hellip; horizontal ellipsis ‰ &#8240; &permil; per mille ′ &#8242; &prime; minutes ″ &#8243; &Prime; seconds ‹ &#8249; &lsaquo; single left angle quotation › &#8250; &rsaquo; single right angle quotation ‾ &#8254; &oline; overline € &#8364; &euro; euro ™ &#8482; or &trade; trademark ← &#8592; &larr; left arrow ↑ &#8593; &uarr; up arrow → &#8594; &rarr; right arrow ↓ &#8595; &darr; down arrow ↔ &#8596; &harr; left right arrow ↵ &#8629; &crarr; carriage return arrow ⌈ &#8968; &lceil; left ceiling ⌉ &#8969; &rceil; right ceiling ⌊ &#8970; &lfloor; left floor ⌋ &#8971; &rfloor; right floor ◊ &#9674; &loz; lozenge ♠ &#9824; &spades; spade ♣ &#9827; &clubs; club ♥ &#9829; &hearts; heart ♦ &#9830; &diams; diamond ⁄ &#8260; &frasl; fraction slash ℘ &#8472; &weierp; script capital P = power set = Weierstrass p ℑ &#8465; &image; black-letter capital I = imaginary part ℜ &#8476; &real; black-letter capital R = real part symbol ℵ &#8501; &alefsym; alef symbol = first transfinite cardinal ⇐ &#8656; &lArr; leftwards double arrow ⇑ &#8657; &uArr; upwards double arrow ⇒ &#8658; &rArr; rightwards double arrow ⇓ &#8659; &dArr; downwards double arrow ⇔ &#8660; &hArr; left right double arrow ⟨ &#9001; &lang; left-pointing angle bracket = bra ⟩ &#9002; &rang; right-pointing angle bracket = ket A Character Entity Reference is an encoding of a character in several characters from a limited character set. The name Character Entity Reference is used for document structuring technologies of the World Wide Web Consortium, such as HTML, XML and XHTML. Encode & decode HTML entities Convert special characters to HTML entities homeprint reference ingnore HTML tags " &#34; &quot; quotation mark \' &#39; &apos; apostrophe & &#38; &amp; ampersand < &#60; &lt; less-than > &#62; &gt; greater-than &#160; &nbsp; non-breaking space ¡ &#161; &iexcl; inverted exclamation mark ¢ &#162; &cent; cent £ &#163; &pound; pound ¤ &#164; &curren; currency ¥ &#165; &yen; yen ¦ &#166; &brvbar; broken vertical bar § &#167; &sect; section ¨ &#168; &uml; spacing diaeresis © &#169; &copy; copyright ª &#170; &ordf; feminine ordinal indicator « &#171; &laquo; angle quotation mark (left) ¬ &#172; &not; negation &#173; &shy; soft hyphen ® &#174; &reg; registered trademark ¯ &#175; &macr; spacing macron ° &#176; &deg; degree ± &#177; &plusmn; plus-or-minus ² &#178; &sup2; superscript 2 ³ &#179; &sup3; superscript 3 ´ &#180; &acute; spacing acute µ &#181; &micro; micro ¶ &#182; &para; paragraph · &#183; &middot; middle dot ¸ &#184; &cedil; spacing cedilla ¹ &#185; &sup1; superscript 1 º &#186; &ordm; masculine ordinal indicator » &#187; &raquo; angle quotation mark (right) ¼ &#188; &frac14; fraction 1/4 ½ &#189; &frac12; fraction 1/2 ¾ &#190; &frac34; fraction 3/4 ¿ &#191; &iquest; inverted question mark × &#215; &times; multiplication ÷ &#247; &divide; division À &#192; &Agrave; capital a, grave accent Á &#193; &Aacute; capital a, acute accent  &#194; &Acirc; capital a, circumflex accent à &#195; &Atilde; capital a, tilde Ä &#196; &Auml; capital a, umlaut mark Å &#197; &Aring; capital a, ring Æ &#198; &AElig; capital ae Ç &#199; &Ccedil; capital c, cedilla È &#200; &Egrave; capital e, grave accent É &#201; &Eacute; capital e, acute accent Ê &#202; &Ecirc; capital e, circumflex accent Ë &#203; &Euml; capital e, umlaut mark Ì &#204; &Igrave; capital i, grave accent Í &#205; &Iacute; capital i, acute accent Î &#206; &Icirc; capital i, circumflex accent Ï &#207; &Iuml; capital i, umlaut mark Ð &#208; &ETH; capital eth, Icelandic Ñ &#209; &Ntilde; capital n, tilde Ò &#210; &Ograve; capital o, grave accent Ó &#211; &Oacute; capital o, acute accent Ô &#212; &Ocirc; capital o, circumflex accent Õ &#213; &Otilde; capital o, tilde Ö &#214; &Ouml; capital o, umlaut mark Ø &#216; &Oslash; capital o, slash Ù &#217; &Ugrave; capital u, grave accent Ú &#218; &Uacute; capital u, acute accent Û &#219; &Ucirc; capital u, circumflex accent Ü &#220; &Uuml; capital u, umlaut mark Ý &#221; &Yacute; capital y, acute accent Þ &#222; &THORN; capital THORN, Icelandic ß &#223; &szlig; small sharp s, German à &#224; &agrave; small a, grave accent á &#225; &aacute; small a, acute accent â &#226; &acirc; small a, circumflex accent ã &#227; &atilde; small a, tilde ä &#228; &auml; small a, umlaut mark å &#229; &aring; small a, ring æ &#230; &aelig; small ae ç &#231; &ccedil; small c, cedilla è &#232; &egrave; small e, grave accent é &#233; &eacute; small e, acute accent ê &#234; &ecirc; small e, circumflex accent ë &#235; &euml; small e, umlaut mark ì &#236; &igrave; small i, grave accent í &#237; &iacute; small i, acute accent î &#238; &icirc; small i, circumflex accent ï &#239; &iuml; small i, umlaut mark ð &#240; &eth; small eth, Icelandic ñ &#241; &ntilde; small n, tilde ò &#242; &ograve; small o, grave accent ó &#243; &oacute; small o, acute accent ô &#244; &ocirc; small o, circumflex accent õ &#245; &otilde; small o, tilde ö &#246; &ouml; small o, umlaut mark ø &#248; &oslash; small o, slash ù &#249; &ugrave; small u, grave accent ú &#250; &uacute; small u, acute accent û &#251; &ucirc; small u, circumflex accent ü &#252; &uuml; small u, umlaut mark ý &#253; &yacute; small y, acute accent þ &#254; &thorn; small thorn, Icelandic ÿ &#255; &yuml; small y, umlaut mark ∀ &#8704; &forall; for all ∂ &#8706; &part; part ∃ &#8707; &exist; exists ∅ &#8709; &empty; empty ∇ &#8711; &nabla; nabla ∈ &#8712; &isin; isin ∉ &#8713; &notin; notin ∋ &#8715; &ni; ni ∏ &#8719; &prod; prod ∑ &#8721; &sum; sum − &#8722; &minus; minus ∗ &#8727; &lowast; lowast √ &#8730; &radic; square root ∝ &#8733; &prop; proportional to ∞ &#8734; &infin; infinity ∠ &#8736; &ang; angle ∧ &#8743; &and; and ∨ &#8744; &or; or ∩ &#8745; &cap; cap ∪ &#8746; &cup; cup ∫ &#8747; &int; integral ∴ &#8756; &there4; therefore ∼ &#8764; &sim; similar to ≅ &#8773; &cong; congruent to ≈ &#8776; &asymp; almost equal ≠ &#8800; &ne; not equal ≡ &#8801; &equiv; equivalent ≤ &#8804; &le; less or equal ≥ &#8805; &ge; greater or equal ⊂ &#8834; &sub; subset of ⊃ &#8835; &sup; superset of ⊄ &#8836; &nsub; not subset of ⊆ &#8838; &sube; subset or equal ⊇ &#8839; &supe; superset or equal ⊕ &#8853; &oplus; circled plus ⊗ &#8855; &otimes; circled times ⊥ &#8869; &perp; perpendicular ⋅ &#8901; &sdot; dot operator Α &#913; &Alpha; Alpha Β &#914; &Beta; Beta Γ &#915; &Gamma; Gamma Δ &#916; &Delta; Delta Ε &#917; &Epsilon; Epsilon Ζ &#918; &Zeta; Zeta Η &#919; &Eta; Eta Θ &#920; &Theta; Theta Ι &#921; &Iota; Iota Κ &#922; &Kappa; Kappa Λ &#923; &Lambda; Lambda Μ &#924; &Mu; Mu Ν &#925; &Nu; Nu Ξ &#926; &Xi; Xi Ο &#927; &Omicron; Omicron Π &#928; &Pi; Pi Ρ &#929; &Rho; Rho ς &#207; &sigmaf; Sigmaf Σ &#931; &Sigma; Sigma Τ &#932; &Tau; Tau Υ &#933; &Upsilon; Upsilon Φ &#934; &Phi; Phi Χ &#935; &Chi; Chi Ψ &#936; &Psi; Psi Ω &#937; &Omega; Omega α &#945; &alpha; alpha β &#946; &beta; beta γ &#947; &gamma; gamma δ &#948; &delta; delta ε &#949; &epsilon; epsilon ζ &#950; &zeta; zeta η &#951; &eta; eta θ &#952; &theta; theta ι &#953; &iota; iota κ &#954; &kappa; kappa λ &#955; &lambda; lambda μ &#956; &mu; mu ν &#957; &nu; nu ξ &#958; &xi; xi ο &#959; &omicron; omicron π &#960; &pi; pi ρ &#961; &rho; rho ς &#962; &sigmaf; sigmaf σ &#963; &sigma; sigma τ &#964; &tau; tau υ &#965; &upsilon; upsilon φ &#966; &phi; phi χ &#967; &chi; chi ψ &#968; &psi; psi ω &#969; &omega; omega ϑ &#977; &thetasym; theta symbol ϒ &#978; &upsih; upsilon symbol ϖ &#982; &piv; pi symbol Œ &#338; &OElig; capital ligature OE œ &#339; &oelig; small ligature oe Š &#352; &Scaron; capital S with caron š &#353; &scaron; small S with caron Ÿ &#376; &Yuml; capital Y with diaeres ƒ &#402; &fnof; f with hook ˆ &#710; &circ; modifier letter circumflex accent ˜ &#732; &tilde; small tilde   &#8194; &ensp; en space   &#8195; &emsp; em space   &#8201; &thinsp; thin space ‌ &#8204; &zwnj; zero width non-joiner ‍ &#8205; &zwj; zero width joiner ‎ &#8206; &lrm; left-to-right mark ‏ &#8207; &rlm; right-to-left mark – &#8211; &ndash; en dash — &#8212; &mdash; em dash ‘ &#8216; &lsquo; left single quotation mark ’ &#8217; &rsquo; right single quotation mark ‚ &#8218; &sbquo; single low-9 quotation mark “ &#8220; &ldquo; left double quotation mark ” &#8221; &rdquo; right double quotation mark „ &#8222; &bdquo; double low-9 quotation mark † &#8224; &dagger; dagger ‡ &#8225; &Dagger; double dagger • &#8226; &bull; bullet … &#8230; &hellip; horizontal ellipsis ‰ &#8240; &permil; per mille ′ &#8242; &prime; minutes ″ &#8243; &Prime; seconds ‹ &#8249; &lsaquo; single left angle quotation › &#8250; &rsaquo; single right angle quotation ‾ &#8254; &oline; overline € &#8364; &euro; euro ™ &#8482; or &trade; trademark ← &#8592; &larr; left arrow ↑ &#8593; &uarr; up arrow → &#8594; &rarr; right arrow ↓ &#8595; &darr; down arrow ↔ &#8596; &harr; left right arrow ↵ &#8629; &crarr; carriage return arrow ⌈ &#8968; &lceil; left ceiling ⌉ &#8969; &rceil; right ceiling ⌊ &#8970; &lfloor; left floor ⌋ &#8971; &rfloor; right floor ◊ &#9674; &loz; lozenge ♠ &#9824; &spades; spade ♣ &#9827; &clubs; club ♥ &#9829; &hearts; heart ♦ &#9830; &diams; diamond ⁄ &#8260; &frasl; fraction slash ℘ &#8472; &weierp; script capital P = power set = Weierstrass p ℑ &#8465; &image; black-letter capital I = imaginary part ℜ &#8476; &real; black-letter capital R = real part symbol ℵ &#8501; &alefsym; alef symbol = first transfinite cardinal ⇐ &#8656; &lArr; leftwards double arrow ⇑ &#8657; &uArr; upwards double arrow ⇒ &#8658; &rArr; rightwards double arrow ⇓ &#8659; &dArr; downwards double arrow ⇔ &#8660; &hArr; left right double arrow ⟨ &#9001; &lang; left-pointing angle bracket = bra ⟩ &#9002; &rang; right-pointing angle bracket = ket A Character Entity Reference is an encoding of a character in several characters from a limited character set. The name Character Entity Reference is used for document structuring technologies of the World Wide Web Consortium, such as HTML, XML and XHTML. ShareThis Copy and Paste'; my $regex = qr/&(?:(?<name>[a-zA-Z][a-zA-Z\d]+)|\#(?:(?<dec>\d+)|(?<hex>x[\da-fA-F]+)));/sp; 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