* string sq_htmlentities ( string string [, int quote_style [, string charset]])
* array sq_get_html_translation_table ( int table [, int quote_style [, string charset]])
*
*
* If sq_get_html_translation_table function is called with HTML_SPECIALCHARS option,
* it returns us-ascii translation table. If it is called with HTML_ENTITIES option,
* it returns translation table defined by charset. Function defaults to us-ascii charset
* and not to iso-8859-1.
*
* Why own functions are used instead of htmlspecialchars() and
* htmlentities() provided by php.
*
*
* - a) removes dependency on options available only in php v.4.1+
* - b) default behavior of htmlentities() is disastrous in non iso-8859-1 environment.
* - c) provides better control of transformations.
*
*
*
* --- Full list of entities (w3.org html4.01 recommendations)
* 1. regural symbols
* U+0022 - "
* (replaced only when $style is not ENT_NOQUOTES or 0)
* U+0026 - &
* U+0027 - '
* (replaced only when $style is ENT_QUOTES or 3)
* U+003C - <
* U+003E - >
*
* 2. latin1 symbols (HTMLlat1.ent)
* U+00A0 - -- no-break space = non-breaking space
* U+00A1 - ¡ -- inverted exclamation mark
* U+00A2 - ¢ -- cent sign
* U+00A3 - £ -- pound sign
* U+00A4 - ¤ -- currency sign
* U+00A5 - ¥ -- yen sign
* U+00A6 - ¦ -- broken bar
* U+00A7 - § -- section sign
* U+00A8 - ¨ -- diaeresis
* U+00A9 - © -- copyright sign
* U+00AA - ª -- feminine ordinal indicator
* U+00AB - « -- left-pointing double angle quotation mark = left pointing guillemet
* U+00AC - ¬ -- not sign
* U+00AD - -- soft hyphen = discretionary hyphen
* U+00AE - ® -- registered sign = registered trade mark sign
* U+00AF - ¯ -- macron = spacing macron = overline = APL overbar
* U+00B0 - ° -- degree sign
* U+00B1 - ± -- plus-minus sign = plus-or-minus sign
* U+00B2 - ² -- superscript two = superscript digit two = squared
* U+00B3 - ³ -- superscript three = superscript digit three = cubed
* U+00B4 - ´ -- acute accent = spacing acute
* U+00B5 - µ -- micro sign
* U+00B6 - ¶ -- pilcrow sign = paragraph sign
* U+00B7 - · -- middle dot = Georgian comma = Greek middle dot
* U+00B8 - ¸ -- cedilla = spacing cedilla
* U+00B9 - ¹ -- superscript one = superscript digit one
* U+00BA - º -- masculine ordinal indicator
* U+00BB - » -- right-pointing double angle quotation mark = right pointing guillemet
* U+00BC - ¼ -- vulgar fraction one quarter = fraction one quarter
* U+00BD - ½ -- vulgar fraction one half = fraction one half
* U+00BE - ¾ -- vulgar fraction three quarters = fraction three quarters
* U+00BF - ¿ -- inverted question mark = turned question mark
* U+0180 - À -- latin capital letter A with grave = latin capital letter A grave,
* U+0181 - Á -- latin capital letter A with acute
* U+0182 - Â -- latin capital letter A with circumflex
* U+0183 - Ã -- latin capital letter A with tilde
* U+0184 - Ä -- latin capital letter A with diaeresis
* U+0185 - Å -- latin capital letter A with ring above = latin capital letter A ring
* U+0186 - Æ -- latin capital letter AE = latin capital ligature AE
* U+0187 - Ç -- latin capital letter C with cedilla
* U+0188 - È -- latin capital letter E with grave
* U+0189 - É -- latin capital letter E with acute
* U+018A - Ê -- latin capital letter E with circumflex
* U+018B - Ë -- latin capital letter E with diaeresis
* U+018C - Ì -- latin capital letter I with grave
* U+018D - Í -- latin capital letter I with acute
* U+018E - Î -- latin capital letter I with circumflex
* U+018F - Ï -- latin capital letter I with diaeresis
* U+0190 - Ð -- latin capital letter ETH
* U+0191 - Ñ -- latin capital letter N with tilde
* U+0192 - Ò -- latin capital letter O with grave
* U+0193 - Ó -- latin capital letter O with acute
* U+0194 - Ô -- latin capital letter O with circumflex
* U+0195 - Õ -- latin capital letter O with tilde
* U+0196 - Ö -- latin capital letter O with diaeresis
* U+0197 - × -- multiplication sign
* U+0198 - Ø -- latin capital letter O with stroke = latin capital letter O slash
* U+0199 - Ù -- latin capital letter U with grave
* U+019A - Ú -- latin capital letter U with acute
* U+019B - Û -- latin capital letter U with circumflex
* U+019C - Ü -- latin capital letter U with diaeresis
* U+019D - Ý -- latin capital letter Y with acute
* U+019E - Þ -- latin capital letter THORN
* U+019F - ß -- latin small letter sharp s = ess-zed
* U+01A0 - à -- latin small letter a with grave = latin small letter a grave
* U+01A1 - á -- latin small letter a with acute
* U+01A2 - â -- latin small letter a with circumflex
* U+01A3 - ã -- latin small letter a with tilde
* U+01A4 - ä -- latin small letter a with diaeresis
* U+01A5 - å -- latin small letter a with ring above = latin small letter a ring
* U+01A6 - æ -- latin small letter ae = latin small ligature ae
* U+01A7 - ç -- latin small letter c with cedilla
* U+01A8 - è -- latin small letter e with grave
* U+01A9 - é -- latin small letter e with acute
* U+01AA - ê -- latin small letter e with circumflex
* U+01AB - ë -- latin small letter e with diaeresis
* U+01AC - ì -- latin small letter i with grave
* U+01AD - í -- latin small letter i with acute
* U+01AE - î -- latin small letter i with circumflex
* U+01AF - ï -- latin small letter i with diaeresis
* U+01B0 - ð -- latin small letter eth
* U+01B1 - ñ -- latin small letter n with tilde
* U+01B2 - ò -- latin small letter o with grave
* U+01B3 - ó -- latin small letter o with acute
* U+01B4 - ô -- latin small letter o with circumflex
* U+01B5 - õ -- latin small letter o with tilde
* U+01B6 - ö -- latin small letter o with diaeresis
* U+01B7 - ÷ -- division sign
* U+01B8 - ø -- latin small letter o with stroke = latin small letter o slash,
* U+01B9 - ù -- latin small letter u with grave
* U+01BA - ú -- latin small letter u with acute
* U+01BB - û -- latin small letter u with circumflex
* U+01BC - ü -- latin small letter u with diaeresis
* U+01BD - ý -- latin small letter y with acute
* U+01BE - þ -- latin small letter thorn,
* U+01BF - ÿ -- latin small letter y with diaeresis
*
* 3. Special symbols (HTMLspecial.ent)
* Latin Extended-A
* U+0152 - Π--
* U+0153 - œ -- latin small ligature oe
* U+0160 - Š -- latin capital letter S with caron
* U+0161 - š -- latin small letter s with caron
* U+0178 - Ÿ -- latin capital letter Y with diaeresis
* Spacing Modifier Letters
* U+02C6 - ˆ -- modifier letter circumflex accent
* U+02DC - ˜ -- small tilde
* General Punctuation
* U+2002 - -- en space
* U+2003 - -- em space
* U+2009 - -- thin space
* U+200C - -- zero width non-joiner
* U+200D - -- zero width joiner
* U+200E - -- left-to-right mark
* U+200F - -- right-to-left mark
* U+2013 - – -- en dash
* U+2014 - — -- em dash
* U+2018 - ‘ -- left single quotation mark
* U+2019 - ’ -- right single quotation mark
* U+201A - ‚ -- single low-9 quotation mark
* U+201C - “ -- left double quotation mark
* U+201D - ” -- right double quotation mark
* U+201E - „ -- double low-9 quotation mark
* U+2020 - † -- dagger
* U+2021 - ‡ -- double dagger
* U+2030 - ‰ -- per mille sign
* U+2039 - ‹ -- single left-pointing angle quotation mark
* U+203A - › -- single right-pointing angle quotation mark
* U+20AC - € -- euro sign
*
* 4. Other symbols (HTMLsymbol.ent)
* Latin Extended-B
* U+0192 - ƒ -- latin small f with hook = function = florin
* Greek
* U+0391 - Α -- greek capital letter alpha
* U+0392 - Β -- greek capital letter beta
* U+0393 - Γ -- greek capital letter gamma
* U+0394 - Δ -- greek capital letter delta
* U+0395 - Ε -- greek capital letter epsilon
* U+0396 - Ζ -- greek capital letter zeta
* U+0397 - Η -- greek capital letter eta
* U+0398 - Θ -- greek capital letter theta
* U+0399 - Ι -- greek capital letter iota
* U+039A - Κ -- greek capital letter kappa
* U+039B - Λ -- greek capital letter lambda
* U+039C - Μ -- greek capital letter mu
* U+039D - Ν -- greek capital letter nu
* U+039E - Ξ -- greek capital letter xi
* U+039F - Ο -- greek capital letter omicron
* U+03A0 - Π -- greek capital letter pi
* U+03A1 - Ρ -- greek capital letter rho
* U+03A3 - Σ -- greek capital letter sigma
* U+03A4 - Τ -- greek capital letter tau
* U+03A5 - Υ -- greek capital letter upsilon
* U+03A6 - Φ -- greek capital letter phi
* U+03A7 - Χ -- greek capital letter chi
* U+03A8 - Ψ -- greek capital letter psi
* U+03A9 - Ω -- greek capital letter omega
* U+03B1 - α -- greek small letter alpha
* U+03B2 - β -- greek small letter beta
* U+03B3 - γ -- greek small letter gamma
* U+03B4 - δ -- greek small letter delta
* U+03B5 - ε -- greek small letter epsilon
* U+03B6 - ζ -- greek small letter zeta
* U+03B7 - η -- greek small letter eta
* U+03B8 - θ -- greek small letter theta
* U+03B9 - ι -- greek small letter iota
* U+03BA - κ -- greek small letter kappa
* U+03BB - λ -- greek small letter lambda
* U+03BC - μ -- greek small letter mu
* U+03BD - ν -- greek small letter nu
* U+03BE - ξ -- greek small letter xi
* U+03BF - ο -- greek small letter omicron
* U+03C0 - π -- greek small letter pi
* U+03C1 - ρ -- greek small letter rho
* U+03C2 - ς -- greek small letter final sigma
* U+03C3 - σ -- greek small letter sigma
* U+03C4 - τ -- greek small letter tau
* U+03C5 - υ -- greek small letter upsilon
* U+03C6 - φ -- greek small letter phi
* U+03C7 - χ -- greek small letter chi
* U+03C8 - ψ -- greek small letter psi
* U+03C9 - ω -- greek small letter omega
* U+03D1 - ϑ -- greek small letter theta symbol
* U+03D2 - ϒ -- greek upsilon with hook symbol
* U+03D6 - ϖ -- greek pi symbol
*
* General Punctuation
* U+2022 - • -- bullet = black small circle
* U+2026 - … -- horizontal ellipsis = three dot leader
* U+2032 - ′ -- prime = minutes = feet
* U+2033 - ″ -- double prime = seconds = inches
* U+203E - ‾ -- overline = spacing overscore
* U+2044 - ⁄ -- fraction slash
*
* Letterlike Symbols
* U+2118 - ℘ -- script capital P = power set = Weierstrass p
* U+2111 - ℑ -- blackletter capital I = imaginary part
* U+211C - ℜ -- blackletter capital R = real part symbol
* U+2122 - ™ -- trade mark sign
* U+2135 - ℵ -- alef symbol = first transfinite cardinal
*
* Arrows
* U+2190 - ← -- leftwards arrow
* U+2191 - ↑ -- upwards arrow
* U+2192 - → -- rightwards arrow
* U+2193 - ↓ -- downwards arrow
* U+2194 - ↔ -- left right arrow
* U+21B5 - ↵ -- downwards arrow with corner leftwards = carriage return
* U+21D0 - ⇐ -- leftwards double arrow
* U+21D1 - ⇑ -- upwards double arrow
* U+21D2 - ⇒ -- rightwards double arrow
* U+21D3 - ⇓ -- downwards double arrow
* U+21D4 - ⇔ -- left right double arrow
*
* Mathematical Operators
* U+2200 - ∀ -- for all
* U+2202 - ∂ -- partial differential
* U+2203 - ∃ -- there exists
* U+2205 - ∅ -- empty set = null set = diameter
* U+2207 - ∇ -- nabla = backward difference
* U+2208 - ∈ -- element of
* U+2209 - ∉ -- not an element of
* U+220B - ∋ -- contains as member
* U+220F - ∏ -- n-ary product = product sign
* U+2211 - ∑ -- n-ary sumation
* U+2212 - − -- minus sign
* U+2217 - ∗ -- asterisk operator
* U+221A - √ -- square root = radical sign
* U+221D - ∝ -- proportional to
* U+221E - ∞ -- infinity
* U+2220 - ∠ -- angle
* U+2227 - ∧ -- logical and = wedge
* U+2228 - ∨ -- logical or = vee
* U+2229 - ∩ -- intersection = cap
* U+222A - ∪ -- union = cup
* U+222B - ∫ -- integral
* U+2234 - ∴ -- therefore
* U+223C - ∼ -- tilde operator = varies with = similar to
* U+2245 - ≅ -- approximately equal to
* U+2248 - ≈ -- almost equal to = asymptotic to
* U+2260 - ≠ -- not equal to
* U+2261 - ≡ -- identical to
* U+2264 - ≤ -- less-than or equal to
* U+2265 - ≥ -- greater-than or equal to
* U+2282 - ⊂ -- subset of
* U+2283 - ⊃ -- superset of
* U+2284 - ⊄ -- not a subset of
* U+2286 - ⊆ -- subset of or equal to
* U+2287 - ⊇ -- superset of or equal to
* U+2295 - ⊕ -- circled plus = direct sum
* U+2297 - ⊗ -- circled times = vector product
* U+22A5 - ⊥ -- up tack = orthogonal to = perpendicular
* U+22C5 - ⋅ -- dot operator
*
* Miscellaneous Technical
* U+2308 - ⌈ -- left ceiling = apl upstile
* U+2309 - ⌉ -- right ceiling
* U+230A - ⌊ -- left floor = apl downstile
* U+230B - ⌋ -- right floor
* U+2329 - ⟨ -- left-pointing angle bracket = bra
* U+232A - ⟩ -- right-pointing angle bracket = ket
*
* Geometric Shapes
* U+25CA - ◊ -- lozenge
*
* Miscellaneous Symbols
* U+2660 - ♠ -- black spade suit
* U+2663 - ♣ -- black club suit = shamrock
* U+2665 - ♥ -- black heart suit = valentine
* U+2666 - ♦ -- black diamond suit
*
*
* @copyright © 2004-2006 The SquirrelMail Project Team
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
* @version $Id$
* @package squirrelmail
* @subpackage strings
*/