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Conversión de entidades HTML con nombre a entidades HTML numéricas (5)

Está buscando una función de traducción simple de entidades HTML con nombre a su contraparte numérica.

Esto se puede hacer utilizando una tabla de traducción (que es una matriz) y la función de traducción de cadena ( strtr ):

$translated = strtr($string, $HTML401NamedToNumeric);

Esto funciona para $string codificación UTF-8 o un juego de caracteres de un solo byte.

A continuación, se muestra una matriz de ejemplo para las entidades con nombre HTML 4.01 especificadas por W3C. Contiene 252 entidades. Si quieres soportar XHTML, entonces hay uno más (lo puse al final):

$HTML401NamedToNumeric = array( '' '' => '' '', # no-break space = non-breaking space, U+00A0 ISOnum ''¡'' => ''¡'', # inverted exclamation mark, U+00A1 ISOnum ''¢'' => ''¢'', # cent sign, U+00A2 ISOnum ''£'' => ''£'', # pound sign, U+00A3 ISOnum ''¤'' => ''¤'', # currency sign, U+00A4 ISOnum ''¥'' => ''¥'', # yen sign = yuan sign, U+00A5 ISOnum ''¦'' => ''¦'', # broken bar = broken vertical bar, U+00A6 ISOnum ''§'' => ''§'', # section sign, U+00A7 ISOnum ''¨'' => ''¨'', # diaeresis = spacing diaeresis, U+00A8 ISOdia ''©'' => ''©'', # copyright sign, U+00A9 ISOnum ''ª'' => ''ª'', # feminine ordinal indicator, U+00AA ISOnum ''«'' => ''«'', # left-pointing double angle quotation mark = left pointing guillemet, U+00AB ISOnum ''¬'' => ''¬'', # not sign, U+00AC ISOnum '''' => '''', # soft hyphen = discretionary hyphen, U+00AD ISOnum ''®'' => ''®'', # registered sign = registered trade mark sign, U+00AE ISOnum ''¯'' => ''¯'', # macron = spacing macron = overline = APL overbar, U+00AF ISOdia ''°'' => ''°'', # degree sign, U+00B0 ISOnum ''±'' => ''±'', # plus-minus sign = plus-or-minus sign, U+00B1 ISOnum ''²'' => ''²'', # superscript two = superscript digit two = squared, U+00B2 ISOnum ''³'' => ''³'', # superscript three = superscript digit three = cubed, U+00B3 ISOnum ''´'' => ''´'', # acute accent = spacing acute, U+00B4 ISOdia ''µ'' => ''µ'', # micro sign, U+00B5 ISOnum ''¶'' => ''¶'', # pilcrow sign = paragraph sign, U+00B6 ISOnum ''·'' => ''·'', # middle dot = Georgian comma = Greek middle dot, U+00B7 ISOnum ''¸'' => ''¸'', # cedilla = spacing cedilla, U+00B8 ISOdia ''¹'' => ''¹'', # superscript one = superscript digit one, U+00B9 ISOnum ''º'' => ''º'', # masculine ordinal indicator, U+00BA ISOnum ''»'' => ''»'', # right-pointing double angle quotation mark = right pointing guillemet, U+00BB ISOnum ''¼'' => ''¼'', # vulgar fraction one quarter = fraction one quarter, U+00BC ISOnum ''½'' => ''½'', # vulgar fraction one half = fraction one half, U+00BD ISOnum ''¾'' => ''¾'', # vulgar fraction three quarters = fraction three quarters, U+00BE ISOnum ''¿'' => ''¿'', # inverted question mark = turned question mark, U+00BF ISOnum ''À'' => ''À'', # latin capital letter A with grave = latin capital letter A grave, U+00C0 ISOlat1 ''Á'' => ''Á'', # latin capital letter A with acute, U+00C1 ISOlat1 ''Â'' => ''Â'', # latin capital letter A with circumflex, U+00C2 ISOlat1 ''Ã'' => ''Ã'', # latin capital letter A with tilde, U+00C3 ISOlat1 ''Ä'' => ''Ä'', # latin capital letter A with diaeresis, U+00C4 ISOlat1 ''Å'' => ''Å'', # latin capital letter A with ring above = latin capital letter A ring, U+00C5 ISOlat1 ''Æ'' => ''Æ'', # latin capital letter AE = latin capital ligature AE, U+00C6 ISOlat1 ''Ç'' => ''Ç'', # latin capital letter C with cedilla, U+00C7 ISOlat1 ''È'' => ''È'', # latin capital letter E with grave, U+00C8 ISOlat1 ''É'' => ''É'', # latin capital letter E with acute, U+00C9 ISOlat1 ''Ê'' => ''Ê'', # latin capital letter E with circumflex, U+00CA ISOlat1 ''Ë'' => ''Ë'', # latin capital letter E with diaeresis, U+00CB ISOlat1 ''Ì'' => ''Ì'', # latin capital letter I with grave, U+00CC ISOlat1 ''Í'' => ''Í'', # latin capital letter I with acute, U+00CD ISOlat1 ''Î'' => ''Î'', # latin capital letter I with circumflex, U+00CE ISOlat1 ''Ï'' => ''Ï'', # latin capital letter I with diaeresis, U+00CF ISOlat1 ''Ð'' => ''Ð'', # latin capital letter ETH, U+00D0 ISOlat1 ''Ñ'' => ''Ñ'', # latin capital letter N with tilde, U+00D1 ISOlat1 ''Ò'' => ''Ò'', # latin capital letter O with grave, U+00D2 ISOlat1 ''Ó'' => ''Ó'', # latin capital letter O with acute, U+00D3 ISOlat1 ''Ô'' => ''Ô'', # latin capital letter O with circumflex, U+00D4 ISOlat1 ''Õ'' => ''Õ'', # latin capital letter O with tilde, U+00D5 ISOlat1 ''Ö'' => ''Ö'', # latin capital letter O with diaeresis, U+00D6 ISOlat1 ''×'' => ''×'', # multiplication sign, U+00D7 ISOnum ''Ø'' => ''Ø'', # latin capital letter O with stroke = latin capital letter O slash, U+00D8 ISOlat1 ''Ù'' => ''Ù'', # latin capital letter U with grave, U+00D9 ISOlat1 ''Ú'' => ''Ú'', # latin capital letter U with acute, U+00DA ISOlat1 ''Û'' => ''Û'', # latin capital letter U with circumflex, U+00DB ISOlat1 ''Ü'' => ''Ü'', # latin capital letter U with diaeresis, U+00DC ISOlat1 ''Ý'' => ''Ý'', # latin capital letter Y with acute, U+00DD ISOlat1 ''Þ'' => ''Þ'', # latin capital letter THORN, U+00DE ISOlat1 ''ß'' => ''ß'', # latin small letter sharp s = ess-zed, U+00DF ISOlat1 ''à'' => ''à'', # latin small letter a with grave = latin small letter a grave, U+00E0 ISOlat1 ''á'' => ''á'', # latin small letter a with acute, U+00E1 ISOlat1 ''â'' => ''â'', # latin small letter a with circumflex, U+00E2 ISOlat1 ''ã'' => ''ã'', # latin small letter a with tilde, U+00E3 ISOlat1 ''ä'' => ''ä'', # latin small letter a with diaeresis, U+00E4 ISOlat1 ''å'' => ''å'', # latin small letter a with ring above = latin small letter a ring, U+00E5 ISOlat1 ''æ'' => ''æ'', # latin small letter ae = latin small ligature ae, U+00E6 ISOlat1 ''ç'' => ''ç'', # latin small letter c with cedilla, U+00E7 ISOlat1 ''è'' => ''è'', # latin small letter e with grave, U+00E8 ISOlat1 ''é'' => ''é'', # latin small letter e with acute, U+00E9 ISOlat1 ''ê'' => ''ê'', # latin small letter e with circumflex, U+00EA ISOlat1 ''ë'' => ''ë'', # latin small letter e with diaeresis, U+00EB ISOlat1 ''ì'' => ''ì'', # latin small letter i with grave, U+00EC ISOlat1 ''í'' => ''í'', # latin small letter i with acute, U+00ED ISOlat1 ''î'' => ''î'', # latin small letter i with circumflex, U+00EE ISOlat1 ''ï'' => ''ï'', # latin small letter i with diaeresis, U+00EF ISOlat1 ''ð'' => ''ð'', # latin small letter eth, U+00F0 ISOlat1 ''ñ'' => ''ñ'', # latin small letter n with tilde, U+00F1 ISOlat1 ''ò'' => ''ò'', # latin small letter o with grave, U+00F2 ISOlat1 ''ó'' => ''ó'', # latin small letter o with acute, U+00F3 ISOlat1 ''ô'' => ''ô'', # latin small letter o with circumflex, U+00F4 ISOlat1 ''õ'' => ''õ'', # latin small letter o with tilde, U+00F5 ISOlat1 ''ö'' => ''ö'', # latin small letter o with diaeresis, U+00F6 ISOlat1 ''÷'' => ''÷'', # division sign, U+00F7 ISOnum ''ø'' => ''ø'', # latin small letter o with stroke, = latin small letter o slash, U+00F8 ISOlat1 ''ù'' => ''ù'', # latin small letter u with grave, U+00F9 ISOlat1 ''ú'' => ''ú'', # latin small letter u with acute, U+00FA ISOlat1 ''û'' => ''û'', # latin small letter u with circumflex, U+00FB ISOlat1 ''ü'' => ''ü'', # latin small letter u with diaeresis, U+00FC ISOlat1 ''ý'' => ''ý'', # latin small letter y with acute, U+00FD ISOlat1 ''þ'' => ''þ'', # latin small letter thorn, U+00FE ISOlat1 ''ÿ'' => ''ÿ'', # latin small letter y with diaeresis, U+00FF ISOlat1 ''&fnof;'' => ''ƒ'', # latin small f with hook = function = florin, U+0192 ISOtech ''Α'' => ''Α'', # greek capital letter alpha, U+0391 ''Β'' => ''Β'', # greek capital letter beta, U+0392 ''Γ'' => ''Γ'', # greek capital letter gamma, U+0393 ISOgrk3 ''Δ'' => ''Δ'', # greek capital letter delta, U+0394 ISOgrk3 ''Ε'' => ''Ε'', # greek capital letter epsilon, U+0395 ''Ζ'' => ''Ζ'', # greek capital letter zeta, U+0396 ''Η'' => ''Η'', # greek capital letter eta, U+0397 ''Θ'' => ''Θ'', # greek capital letter theta, U+0398 ISOgrk3 ''Ι'' => ''Ι'', # greek capital letter iota, U+0399 ''Κ'' => ''Κ'', # greek capital letter kappa, U+039A ''Λ'' => ''Λ'', # greek capital letter lambda, U+039B ISOgrk3 ''Μ'' => ''Μ'', # greek capital letter mu, U+039C ''Ν'' => ''Ν'', # greek capital letter nu, U+039D ''Ξ'' => ''Ξ'', # greek capital letter xi, U+039E ISOgrk3 ''Ο'' => ''Ο'', # greek capital letter omicron, U+039F ''Π'' => ''Π'', # greek capital letter pi, U+03A0 ISOgrk3 ''Ρ'' => ''Ρ'', # greek capital letter rho, U+03A1 ''Σ'' => ''Σ'', # greek capital letter sigma, U+03A3 ISOgrk3 ''Τ'' => ''Τ'', # greek capital letter tau, U+03A4 ''Υ'' => ''Υ'', # greek capital letter upsilon, U+03A5 ISOgrk3 ''Φ'' => ''Φ'', # greek capital letter phi, U+03A6 ISOgrk3 ''Χ'' => ''Χ'', # greek capital letter chi, U+03A7 ''Ψ'' => ''Ψ'', # greek capital letter psi, U+03A8 ISOgrk3 ''Ω'' => ''Ω'', # greek capital letter omega, U+03A9 ISOgrk3 ''α'' => ''α'', # greek small letter alpha, U+03B1 ISOgrk3 ''β'' => ''β'', # greek small letter beta, U+03B2 ISOgrk3 ''γ'' => ''γ'', # greek small letter gamma, U+03B3 ISOgrk3 ''δ'' => ''δ'', # greek small letter delta, U+03B4 ISOgrk3 ''ε'' => ''ε'', # greek small letter epsilon, U+03B5 ISOgrk3 ''ζ'' => ''ζ'', # greek small letter zeta, U+03B6 ISOgrk3 ''η'' => ''η'', # greek small letter eta, U+03B7 ISOgrk3 ''θ'' => ''θ'', # greek small letter theta, U+03B8 ISOgrk3 ''ι'' => ''ι'', # greek small letter iota, U+03B9 ISOgrk3 ''κ'' => ''κ'', # greek small letter kappa, U+03BA ISOgrk3 ''λ'' => ''λ'', # greek small letter lambda, U+03BB ISOgrk3 ''μ'' => ''μ'', # greek small letter mu, U+03BC ISOgrk3 ''ν'' => ''ν'', # greek small letter nu, U+03BD ISOgrk3 ''ξ'' => ''ξ'', # greek small letter xi, U+03BE ISOgrk3 ''ο'' => ''ο'', # greek small letter omicron, U+03BF NEW ''π'' => ''π'', # greek small letter pi, U+03C0 ISOgrk3 ''ρ'' => ''ρ'', # greek small letter rho, U+03C1 ISOgrk3 ''&sigmaf;'' => ''ς'', # greek small letter final sigma, U+03C2 ISOgrk3 ''σ'' => ''σ'', # greek small letter sigma, U+03C3 ISOgrk3 ''τ'' => ''τ'', # greek small letter tau, U+03C4 ISOgrk3 ''υ'' => ''υ'', # greek small letter upsilon, U+03C5 ISOgrk3 ''φ'' => ''φ'', # greek small letter phi, U+03C6 ISOgrk3 ''χ'' => ''χ'', # greek small letter chi, U+03C7 ISOgrk3 ''ψ'' => ''ψ'', # greek small letter psi, U+03C8 ISOgrk3 ''ω'' => ''ω'', # greek small letter omega, U+03C9 ISOgrk3 ''&thetasym;'' => ''ϑ'', # greek small letter theta symbol, U+03D1 NEW ''&upsih;'' => ''ϒ'', # greek upsilon with hook symbol, U+03D2 NEW ''ϖ'' => ''ϖ'', # greek pi symbol, U+03D6 ISOgrk3 ''•'' => ''•'', # bullet = black small circle, U+2022 ISOpub ''…'' => ''…'', # horizontal ellipsis = three dot leader, U+2026 ISOpub ''′'' => ''′'', # prime = minutes = feet, U+2032 ISOtech ''″'' => ''″'', # double prime = seconds = inches, U+2033 ISOtech ''&oline;'' => ''‾'', # overline = spacing overscore, U+203E NEW ''&frasl;'' => ''⁄'', # fraction slash, U+2044 NEW ''&weierp;'' => ''℘'', # script capital P = power set = Weierstrass p, U+2118 ISOamso ''&image;'' => ''ℑ'', # blackletter capital I = imaginary part, U+2111 ISOamso ''&real;'' => ''ℜ'', # blackletter capital R = real part symbol, U+211C ISOamso ''™'' => ''™'', # trade mark sign, U+2122 ISOnum ''&alefsym;'' => ''ℵ'', # alef symbol = first transfinite cardinal, U+2135 NEW ''←'' => ''←'', # leftwards arrow, U+2190 ISOnum ''↑'' => ''↑'', # upwards arrow, U+2191 ISOnum ''→'' => ''→'', # rightwards arrow, U+2192 ISOnum ''↓'' => ''↓'', # downwards arrow, U+2193 ISOnum ''↔'' => ''↔'', # left right arrow, U+2194 ISOamsa ''&crarr;'' => ''↵'', # downwards arrow with corner leftwards = carriage return, U+21B5 NEW ''⇐'' => ''⇐'', # leftwards double arrow, U+21D0 ISOtech ''&uArr;'' => ''⇑'', # upwards double arrow, U+21D1 ISOamsa ''⇒'' => ''⇒'', # rightwards double arrow, U+21D2 ISOtech ''&dArr;'' => ''⇓'', # downwards double arrow, U+21D3 ISOamsa ''⇔'' => ''⇔'', # left right double arrow, U+21D4 ISOamsa ''∀'' => ''∀'', # for all, U+2200 ISOtech ''∂'' => ''∂'', # partial differential, U+2202 ISOtech ''∃'' => ''∃'', # there exists, U+2203 ISOtech ''∅'' => ''∅'', # empty set = null set = diameter, U+2205 ISOamso ''∇'' => ''∇'', # nabla = backward difference, U+2207 ISOtech ''∈'' => ''∈'', # element of, U+2208 ISOtech ''∉'' => ''∉'', # not an element of, U+2209 ISOtech ''&ni;'' => ''∋'', # contains as member, U+220B ISOtech ''∏'' => ''∏'', # n-ary product = product sign, U+220F ISOamsb ''∑'' => ''∑'', # n-ary sumation, U+2211 ISOamsb ''−'' => ''−'', # minus sign, U+2212 ISOtech ''&lowast;'' => ''∗'', # asterisk operator, U+2217 ISOtech ''√'' => ''√'', # square root = radical sign, U+221A ISOtech ''&prop;'' => ''∝'', # proportional to, U+221D ISOtech ''∞'' => ''∞'', # infinity, U+221E ISOtech ''&ang;'' => ''∠'', # angle, U+2220 ISOamso ''&and;'' => ''∧'', # logical and = wedge, U+2227 ISOtech ''&or;'' => ''∨'', # logical or = vee, U+2228 ISOtech ''∩'' => ''∩'', # intersection = cap, U+2229 ISOtech ''∪'' => ''∪'', # union = cup, U+222A ISOtech ''∫'' => ''∫'', # integral, U+222B ISOtech ''&there4;'' => ''∴'', # therefore, U+2234 ISOtech ''&sim;'' => ''∼'', # tilde operator = varies with = similar to, U+223C ISOtech ''&cong;'' => ''≅'', # approximately equal to, U+2245 ISOtech ''≈'' => ''≈'', # almost equal to = asymptotic to, U+2248 ISOamsr ''≠'' => ''≠'', # not equal to, U+2260 ISOtech ''&equiv;'' => ''≡'', # identical to, U+2261 ISOtech ''≤'' => ''≤'', # less-than or equal to, U+2264 ISOtech ''≥'' => ''≥'', # greater-than or equal to, U+2265 ISOtech ''⊂'' => ''⊂'', # subset of, U+2282 ISOtech ''⊃'' => ''⊃'', # superset of, U+2283 ISOtech ''&nsub;'' => ''⊄'', # not a subset of, U+2284 ISOamsn ''&sube;'' => ''⊆'', # subset of or equal to, U+2286 ISOtech ''&supe;'' => ''⊇'', # superset of or equal to, U+2287 ISOtech ''&oplus;'' => ''⊕'', # circled plus = direct sum, U+2295 ISOamsb ''&otimes;'' => ''⊗'', # circled times = vector product, U+2297 ISOamsb ''&perp;'' => ''⊥'', # up tack = orthogonal to = perpendicular, U+22A5 ISOtech ''⋅'' => ''⋅'', # dot operator, U+22C5 ISOamsb ''&lceil;'' => ''⌈'', # left ceiling = apl upstile, U+2308 ISOamsc ''&rceil;'' => ''⌉'', # right ceiling, U+2309 ISOamsc ''&lfloor;'' => ''⌊'', # left floor = apl downstile, U+230A ISOamsc ''&rfloor;'' => ''⌋'', # right floor, U+230B ISOamsc ''&lang;'' => ''〈'', # left-pointing angle bracket = bra, U+2329 ISOtech ''&rang;'' => ''〉'', # right-pointing angle bracket = ket, U+232A ISOtech ''&loz;'' => ''◊'', # lozenge, U+25CA ISOpub ''&spades;'' => ''♠'', # black spade suit, U+2660 ISOpub ''&clubs;'' => ''♣'', # black club suit = shamrock, U+2663 ISOpub ''&hearts;'' => ''♥'', # black heart suit = valentine, U+2665 ISOpub ''&diams;'' => ''♦'', # black diamond suit, U+2666 ISOpub ''"'' => ''"'', # quotation mark = APL quote, U+0022 ISOnum ''&'' => ''&'', # ampersand, U+0026 ISOnum ''<'' => ''<'', # less-than sign, U+003C ISOnum ''>'' => ''>'', # greater-than sign, U+003E ISOnum ''&OElig;'' => ''Œ'', # latin capital ligature OE, U+0152 ISOlat2 ''&oelig;'' => ''œ'', # latin small ligature oe, U+0153 ISOlat2 ''&Scaron;'' => ''Š'', # latin capital letter S with caron, U+0160 ISOlat2 ''&scaron;'' => ''š'', # latin small letter s with caron, U+0161 ISOlat2 ''&Yuml;'' => ''Ÿ'', # latin capital letter Y with diaeresis, U+0178 ISOlat2 ''&circ;'' => ''ˆ'', # modifier letter circumflex accent, U+02C6 ISOpub ''&tilde;'' => ''˜'', # small tilde, U+02DC ISOdia ''&ensp;'' => '' '', # en space, U+2002 ISOpub ''&emsp;'' => '' '', # em space, U+2003 ISOpub '' '' => '' '', # thin space, U+2009 ISOpub ''&zwnj;'' => ''‌'', # zero width non-joiner, U+200C NEW RFC 2070 ''&zwj;'' => ''‍'', # zero width joiner, U+200D NEW RFC 2070 ''&lrm;'' => ''‎'', # left-to-right mark, U+200E NEW RFC 2070 ''&rlm;'' => ''‏'', # right-to-left mark, U+200F NEW RFC 2070 ''–'' => ''–'', # en dash, U+2013 ISOpub ''—'' => ''—'', # em dash, U+2014 ISOpub ''‘'' => ''‘'', # left single quotation mark, U+2018 ISOnum ''’'' => ''’'', # right single quotation mark, U+2019 ISOnum ''&sbquo;'' => ''‚'', # single low-9 quotation mark, U+201A NEW ''“'' => ''“'', # left double quotation mark, U+201C ISOnum ''”'' => ''”'', # right double quotation mark, U+201D ISOnum ''&bdquo;'' => ''„'', # double low-9 quotation mark, U+201E NEW ''&dagger;'' => ''†'', # dagger, U+2020 ISOpub ''&Dagger;'' => ''‡'', # double dagger, U+2021 ISOpub ''&permil;'' => ''‰'', # per mille sign, U+2030 ISOtech ''&lsaquo;'' => ''‹'', # single left-pointing angle quotation mark, U+2039 ISO proposed ''&rsaquo;'' => ''›'', # single right-pointing angle quotation mark, U+203A ISO proposed ''€'' => ''€'', # euro sign, U+20AC NEW );

Y el de XHTML:

''''' => ''''', # apostrophe = APL quote, U+0027 ISOnum

¿Existe una función PHP para convertir entidades HTML con nombre en sus respectivas entidades HTML numéricas?

Por ejemplo:

$str = "Oggi è un bel giorno"; echo entities_to_unicode($str); // Oggi è un bel giorno

Gracias de antemano, que tengas un buen día!

Primero use html_entity_decode para obtener la versión no codificada de su código fuente. Si es necesario, configure el tercer parámetro (codificación) con el valor adecuado.

Luego use utf8_encode en ese código fuente.

$source_code_without_entities = html_entity_decode($source_code_with_entities); $utf8_source_code = utf8_encode($source_code_without_entities);

echo preg_replace(''/[^!-%/x27-;=?-~ ]/e'', ''"&#".ord("$0").";"'', html_entity_decode($str))

Esta solución se basa en el código de php.net :

function entities_to_unicode($str) { $str = html_entity_decode($str, ENT_QUOTES, ''UTF-8''); $str = preg_replace_callback("/(&#[0-9]+;)/", function($m) { return mb_convert_encoding($m[1], "UTF-8", "HTML-ENTITIES"); }, $str); return $str; } $str = ''Oggi è un bel giorno''; echo entities_to_unicode($str);

Éste

no requiere enumeración de entidades en el código del usuario,
funciona en código HTML que contiene entidades con nombre (grosero aplicar html_entity_decode a toda la cadena desordena <y> (convertido & lt; y & gt;) y etiqueta HTML inicio / final):

Aquí está

function htmlent2xml($s) { return preg_replace_callback("/(&[a-zA-Z][a-zA-Z0-9];)/",function($m){ $c = html_entity_decode($m[0],ENT_HTML5,"UTF-8"); return htmlentities($c,ENT_XML1,"UTF-8"); },$s); }