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here is PHP's "official" HTML entities table:

array (
  ' ' => ' ',
  '¡' => '¡',
  '¢' => '¢',
  '£' => '£',
  '¤' => '¤',
  '¥' => '¥',
  '¦' => '¦',
  '§' => '§',
  '¨' => '¨',
  '©' => '©',
  'ª' => 'ª',
  '«' => '«',
  '¬' => '¬',
  '­' => '­',
  '®' => '®',
  '¯' => '¯',
  '°' => '°',
  '±' => '±',
  '²' => '²',
  '³' => '³',
  '´' => '´',
  'µ' => 'µ',
  '¶' => '¶',
  '·' => '·',
  '¸' => '¸',
  '¹' => '¹',
  'º' => 'º',
  '»' => '»',
  '¼' => '¼',
  '½' => '½',
  '¾' => '¾',
  '¿' => '¿',
  'À' => 'À',
  'Á' => 'Á',
  'Â' => 'Â',
  'Ã' => 'Ã',
  'Ä' => 'Ä',
  'Å' => 'Å',
  'Æ' => 'Æ',
  'Ç' => 'Ç',
  'È' => 'È',
  'É' => 'É',
  'Ê' => 'Ê',
  'Ë' => 'Ë',
  'Ì' => 'Ì',
  'Í' => 'Í',
  'Î' => 'Î',
  'Ï' => 'Ï',
  'Ð' => 'Ð',
  'Ñ' => 'Ñ',
  'Ò' => 'Ò',
  'Ó' => 'Ó',
  'Ô' => 'Ô',
  'Õ' => 'Õ',
  'Ö' => 'Ö',
  '×' => '×',
  'Ø' => 'Ø',
  'Ù' => 'Ù',
  'Ú' => 'Ú',
  'Û' => 'Û',
  'Ü' => 'Ü',
  'Ý' => 'Ý',
  'Þ' => 'Þ',
  'ß' => 'ß',
  'à' => 'à',
  'á' => 'á',
  'â' => 'â',
  'ã' => 'ã',
  'ä' => 'ä',
  'å' => 'å',
  'æ' => 'æ',
  'ç' => 'ç',
  'è' => 'è',
  'é' => 'é',
  'ê' => 'ê',
  'ë' => 'ë',
  'ì' => 'ì',
  'í' => 'í',
  'î' => 'î',
  'ï' => 'ï',
  'ð' => 'ð',
  'ñ' => 'ñ',
  'ò' => 'ò',
  'ó' => 'ó',
  'ô' => 'ô',
  'õ' => 'õ',
  'ö' => 'ö',
  '÷' => '÷',
  'ø' => 'ø',
  'ù' => 'ù',
  'ú' => 'ú',
  'û' => 'û',
  'ü' => 'ü',
  'ý' => 'ý',
  'þ' => 'þ',
  'ÿ' => 'ÿ',
  '&' => '&',
  '"' => '"',
  '<' => '&lt;',
  '>' => '&gt;',
)

here is our HTML entities table, also showing if your browser supports each entity:

	array(
  34	=>  'quot'	"
  38	=>  'amp'	&
  39	=>  'apos'	'
  60	=>  'lt'	<
  62	=>  'gt'	>
  160	=>  'nbsp'	 
  161	=>  'iexcl'	¡
  162	=>  'cent'	¢
  163	=>  'pound'	£
  164	=>  'curren'	¤
  165	=>  'yen'	¥
  166	=>  'brvbar'	¦
  167	=>  'sect'	§
  168	=>  'uml'	¨
  169	=>  'copy'	©
  170	=>  'ordf'	ª
  171	=>  'laquo'	«
  172	=>  'not'	¬
  173	=>  'shy'	­
  174	=>  'reg'	®
  175	=>  'macr'	¯
  176	=>  'deg'	°
  177	=>  'plusmn'	±
  178	=>  'sup2'	²
  179	=>  'sup3'	³
  180	=>  'acute'	´
  181	=>  'micro'	µ
  182	=>  'para'	¶
  183	=>  'middot'	·
  184	=>  'cedil'	¸
  185	=>  'sup1'	¹
  186	=>  'ordm'	º
  187	=>  'raquo'	»
  188	=>  'frac14'	¼
  189	=>  'frac12'	½
  190	=>  'frac34'	¾
  191	=>  'iquest'	¿
  192	=>  'Agrave'	À
  193	=>  'Aacute'	Á
  194	=>  'Acirc'	Â
  195	=>  'Atilde'	Ã
  196	=>  'Auml'	Ä
  197	=>  'Aring'	Å
  198	=>  'AElig'	Æ
  199	=>  'Ccedil'	Ç
  200	=>  'Egrave'	È
  201	=>  'Eacute'	É
  202	=>  'Ecirc'	Ê
  203	=>  'Euml'	Ë
  204	=>  'Igrave'	Ì
  205	=>  'Iacute'	Í
  206	=>  'Icirc'	Î
  207	=>  'Iuml'	Ï
  208	=>  'ETH'	Ð
  209	=>  'Ntilde'	Ñ
  210	=>  'Ograve'	Ò
  211	=>  'Oacute'	Ó
  212	=>  'Ocirc'	Ô
  213	=>  'Otilde'	Õ
  214	=>  'Ouml'	Ö
  215	=>  'times'	×
  216	=>  'Oslash'	Ø
  217	=>  'Ugrave'	Ù
  218	=>  'Uacute'	Ú
  219	=>  'Ucirc'	Û
  220	=>  'Uuml'	Ü
  221	=>  'Yacute'	Ý
  222	=>  'THORN'	Þ
  223	=>  'szlig'	ß
  224	=>  'agrave'	à
  225	=>  'aacute'	á
  226	=>  'acirc'	â
  227	=>  'atilde'	ã
  228	=>  'auml'	ä
  229	=>  'aring'	å
  230	=>  'aelig'	æ
  231	=>  'ccedil'	ç
  232	=>  'egrave'	è
  233	=>  'eacute'	é
  234	=>  'ecirc'	ê
  235	=>  'euml'	ë
  236	=>  'igrave'	ì
  237	=>  'iacute'	í
  238	=>  'icirc'	î
  239	=>  'iuml'	ï
  240	=>  'eth'	ð
  241	=>  'ntilde'	ñ
  242	=>  'ograve'	ò
  243	=>  'oacute'	ó
  244	=>  'ocirc'	ô
  245	=>  'otilde'	õ
  246	=>  'ouml'	ö
  247	=>  'divide'	÷
  248	=>  'oslash'	ø
  249	=>  'ugrave'	ù
  250	=>  'uacute'	ú
  251	=>  'ucirc'	û
  252	=>  'uuml'	ü
  253	=>  'yacute'	ý
  254	=>  'thorn'	þ
  255	=>  'yuml'	ÿ
  338	=>  'OElig'	Œ
  339	=>  'oelig'	œ
  352	=>  'Scaron'	Š
  353	=>  'scaron'	š
  376	=>  'Yuml'	Ÿ
  402	=>  'fnof'	ƒ
  710	=>  'circ'	ˆ
  732	=>  'tilde'	˜
  913	=>  'Alpha'	Α
  914	=>  'Beta'	Β
  915	=>  'Gamma'	Γ
  916	=>  'Delta'	Δ
  917	=>  'Epsilon'	Ε
  918	=>  'Zeta'	Ζ
  919	=>  'Eta'	Η
  920	=>  'Theta'	Θ
  921	=>  'Iota'	Ι
  922	=>  'Kappa'	Κ
  923	=>  'Lambda'	Λ
  924	=>  'Mu'	Μ
  925	=>  'Nu'	Ν
  926	=>  'Xi'	Ξ
  927	=>  'Omicron'	Ο
  928	=>  'Pi'	Π
  929	=>  'Rho'	Ρ
  931	=>  'Sigma'	Σ
  932	=>  'Tau'	Τ
  933	=>  'Upsilon'	Υ
  934	=>  'Phi'	Φ
  935	=>  'Chi'	Χ
  936	=>  'Psi'	Ψ
  937	=>  'Omega'	Ω
  945	=>  'alpha'	α
  946	=>  'beta'	β
  947	=>  'gamma'	γ
  948	=>  'delta'	δ
  949	=>  'epsilon'	ε
  950	=>  'zeta'	ζ
  951	=>  'eta'	η
  952	=>  'theta'	θ
  953	=>  'iota'	ι
  954	=>  'kappa'	κ
  955	=>  'lambda'	λ
  956	=>  'mu'	μ
  957	=>  'nu'	ν
  958	=>  'xi'	ξ
  959	=>  'omicron'	ο
  960	=>  'pi'	π
  961	=>  'rho'	ρ
  962	=>  'sigmaf'	ς
  963	=>  'sigma'	σ
  964	=>  'tau'	τ
  965	=>  'upsilon'	υ
  966	=>  'phi'	φ
  967	=>  'chi'	χ
  968	=>  'psi'	ψ
  969	=>  'omega'	ω
  977	=>  'thetasym'	ϑ
  978	=>  'upsih'	ϒ
  982	=>  'piv'	ϖ
  8194	=>  'ensp'	 
  8195	=>  'emsp'	 
  8201	=>  'thinsp'	 
  8204	=>  'zwnj'	‌
  8205	=>  'zwj'	‍
  8206	=>  'lrm'	‎
  8207	=>  'rlm'	‏
  8211	=>  'ndash'	–
  8212	=>  'mdash'	—
  8216	=>  'lsquo'	‘
  8217	=>  'rsquo'	’
  8218	=>  'sbquo'	‚
  8220	=>  'ldquo'	“
  8221	=>  'rdquo'	”
  8222	=>  'bdquo'	„
  8224	=>  'dagger'	†
  8225	=>  'Dagger'	‡
  8226	=>  'bull'	•
  8230	=>  'hellip'	…
  8240	=>  'permil'	‰
  8242	=>  'prime'	′
  8243	=>  'Prime'	″
  8249	=>  'lsaquo'	‹
  8250	=>  'rsaquo'	›
  8254	=>  'oline'	‾
  8260	=>  'frasl'	⁄
  8364	=>  'euro'	€
  8465	=>  'image'	ℑ
  8472	=>  'weierp'	℘
  8476	=>  'real'	ℜ
  8482	=>  'trade'	™
  8501	=>  'alefsym'	ℵ
  8592	=>  'larr'	←
  8593	=>  'uarr'	↑
  8594	=>  'rarr'	→
  8595	=>  'darr'	↓
  8596	=>  'harr'	↔
  8629	=>  'crarr'	↵
  8656	=>  'lArr'	⇐
  8657	=>  'uArr'	⇑
  8658	=>  'rArr'	⇒
  8659	=>  'dArr'	⇓
  8660	=>  'hArr'	⇔
  8704	=>  'forall'	∀
  8706	=>  'part'	∂
  8707	=>  'exist'	∃
  8709	=>  'empty'	∅
  8711	=>  'nabla'	∇
  8712	=>  'isin'	∈
  8713	=>  'notin'	∉
  8715	=>  'ni'	∋
  8719	=>  'prod'	∏
  8721	=>  'sum'	∑
  8722	=>  'minus'	−
  8727	=>  'lowast'	∗
  8730	=>  'radic'	√
  8733	=>  'prop'	∝
  8734	=>  'infin'	∞
  8736	=>  'ang'	∠
  8743	=>  'and'	∧
  8744	=>  'or'	∨
  8745	=>  'cap'	∩
  8746	=>  'cup'	∪
  8747	=>  'int'	∫
  8756	=>  'there4'	∴
  8764	=>  'sim'	∼
  8773	=>  'cong'	≅
  8776	=>  'asymp'	≈
  8800	=>  'ne'	≠
  8801	=>  'equiv'	≡
  8804	=>  'le'	≤
  8805	=>  'ge'	≥
  8834	=>  'sub'	⊂
  8835	=>  'sup'	⊃
  8836	=>  'nsub'	⊄
  8838	=>  'sube'	⊆
  8839	=>  'supe'	⊇
  8853	=>  'oplus'	⊕
  8855	=>  'otimes'	⊗
  8869	=>  'perp'	⊥
  8901	=>  'sdot'	⋅
  8968	=>  'lceil'	⌈
  8969	=>  'rceil'	⌉
  8970	=>  'lfloor'	⌊
  8971	=>  'rfloor'	⌋
  9001	=>  'lang'	⟨
  9002	=>  'rang'	⟩
  9674	=>  'loz'	◊
  9824	=>  'spades'	♠
  9827	=>  'clubs'	♣
  9829	=>  'hearts'	♥
  9830	=>  'diams'	♦
	)