时间：2021-07-01 10:21:17 帮助过：28人阅读
| [code] class HtmlFilter { /** * 过滤字符串中的特殊字符 * @static * @param $content * @return string */ public static function filterSpacialHtmlChar($content) { if (empty($content)) { return ''; } $content=self::delAllSpace($content); $content=self::replaceHtmlAndJs($content); return strip_tags($content); } /** * 生成摘要 * @static * @param $content * @param $len * @param string $char * @return string */ public static function getSummary($content,$len=100,$char='UTF-8'){ if(empty($content)){ return ''; } if($len>=mb_strlen($content)){ return self::filterSpacialHtmlChar($content); } // bbs.it-home.org return mb_substr(self::filterSpacialHtmlChar($content),0,$len,$char).'...'; } /** * 去掉 $str中的特殊字符 * @static * @param $document * @return mixed|string */ public static function replaceHtmlAndJs($document) { $document = trim($document); if (strlen($document) <= 0) { return $document; } $search = array("''si"); $replace = array(""); $htmlCharArr=self::getSpecialHtmlArr(); foreach($htmlCharArr as $hc){ $replace[]=$hc[0]; $search[]="'&(".$hc[1]."|".$hc[2]."|".$hc[3].");'i"; } return @preg_replace($search, $replace, $document); } /** * 删除空格 * @static * @param $str * @return mixed */ public static function delAllSpace($str) { $preStr = array(" ", " ", "\t", "\n", "\r" ); $afterStr = array("", "", "", "", "",); return str_replace($preStr, $afterStr, $str); } /** * 2012-07-05 by long * 特殊 Html 代码集合 * $sh $sh[0] 显示的字符 * $sh $sh[1] $sh[2] 显示的字符的html编码 * $sh $sh[3] 显示的字符的注释 * @static * @return array */ public static function getSpecialHtmlArr(){ $sh[]=array("","nbsp","#160","no-break space = non-breaking space"); $sh[]=array("?","iexcl","#161","inverted exclamation mark"); $sh[]=array("￠","cent","#162","cent sign"); $sh[]=array("￡","pound","#163","pound sign"); $sh[]=array("¤","curren","#164","currency sign"); $sh[]=array("￥","yen","#165","yen sign = yuan sign"); $sh[]=array("|","brvbar","#166","broken bar = broken vertical bar"); $sh[]=array("§","sect","#167","section sign"); $sh[]=array("¨","uml","#168","diaeresis = spacing diaeresis"); $sh[]=array("?","copy","#169","copyright sign"); $sh[]=array("a","ordf","#170","feminine ordinal indicator"); $sh[]=array("?","laquo","#171","left-pointing double angle quotation mark = left pointing guillemet"); $sh[]=array("?","not","#172","not sign"); $sh[]=array("-","shy","#173","soft hyphen = discretionary hyphen"); $sh[]=array("?","reg","#174","registered sign = registered trade mark sign"); $sh[]=array("ˉ","macr","#175","macron = spacing macron = overline = APL overbar"); $sh[]=array("°","deg","#176","degree sign"); $sh[]=array("±","plusmn","#177","plus-minus sign = plus-or-minus sign"); $sh[]=array("2","sup2","#178","superscript two = superscript digit two = squared"); $sh[]=array("3","sup3","#179","superscript three = superscript digit three = cubed"); $sh[]=array("′","acute","#180","acute accent = spacing acute"); $sh[]=array("μ","micro","#181","micro sign"); $sh[]=array("?","para","#182","pilcrow sign = paragraph sign"); $sh[]=array("·","middot","#183","middle dot = Georgian comma = Greek middle dot"); $sh[]=array("?","cedil","#184","cedilla = spacing cedilla"); $sh[]=array("1","sup1","#185","superscript one = superscript digit one"); $sh[]=array("o","ordm","#186","masculine ordinal indicator"); $sh[]=array("?","raquo","#187","right-pointing double angle quotation mark = right pointing guillemet"); $sh[]=array("?","frac14","#188","vulgar fraction one quarter = fraction one quarter"); $sh[]=array("?","frac12","#189","vulgar fraction one half = fraction one half"); $sh[]=array("?","frac34","#190","vulgar fraction three quarters = fraction three quarters"); $sh[]=array("?","iquest","#191","inverted question mark = turned question mark"); $sh[]=array("à","Agrave","#192","latin capital letter A with grave = latin capital letter A grave"); $sh[]=array("á","Aacute","#193","latin capital letter A with acute"); $sh[]=array("?","Acirc","#194","latin capital letter A with circumflex"); $sh[]=array("?","Atilde","#195","latin capital letter A with tilde"); $sh[]=array("?","Auml","#196","latin capital letter A with diaeresis"); $sh[]=array("?","Aring","#197","latin capital letter A with ring above = latin capital letter A ring"); $sh[]=array("?","AElig","#198","latin capital letter AE = latin capital ligature AE"); $sh[]=array("?","Ccedil","#199","latin capital letter C with cedilla"); $sh[]=array("è","Egrave","#200","latin capital letter E with grave"); $sh[]=array("é","Eacute","#201","latin capital letter E with acute"); $sh[]=array("ê","Ecirc","#202","latin capital letter E with circumflex"); $sh[]=array("?","Euml","#203","latin capital letter E with diaeresis"); $sh[]=array("ì","Igrave","#204","latin capital letter I with grave"); $sh[]=array("í","Iacute","#205","latin capital letter I with acute"); $sh[]=array("?","Icirc","#206","latin capital letter I with circumflex"); $sh[]=array("?","Iuml","#207","latin capital letter I with diaeresis"); $sh[]=array("D","ETH","#208","latin capital letter ETH"); $sh[]=array("?","Ntilde","#209","latin capital letter N with tilde"); $sh[]=array("ò","Ograve","#210","latin capital letter O with grave"); $sh[]=array("ó","Oacute","#211","latin capital letter O with acute"); $sh[]=array("?","Ocirc","#212","latin capital letter O with circumflex"); $sh[]=array("?","Otilde","#213","latin capital letter O with tilde"); $sh[]=array("?","Ouml","#214","latin capital letter O with diaeresis"); $sh[]=array("×","times","#215","multiplication sign"); $sh[]=array("?","Oslash","#216","latin capital letter O with stroke = latin capital letter O slash"); $sh[]=array("ù","Ugrave","#217","latin capital letter U with grave"); $sh[]=array("ú","Uacute","#218","latin capital letter U with acute"); $sh[]=array("?","Ucirc","#219","latin capital letter U with circumflex"); $sh[]=array("ü","Uuml","#220","latin capital letter U with diaeresis"); $sh[]=array("Y","Yacute","#221","latin capital letter Y with acute"); $sh[]=array("T","THORN","#222","latin capital letter THORN"); $sh[]=array("?","szlig","#223","latin small letter sharp s = ess-zed"); $sh[]=array("à","agrave","#224","latin small letter a with grave = latin small letter a grave"); $sh[]=array("á","aacute","#225","latin small letter a with acute"); $sh[]=array("a","acirc","#226","latin small letter a with circumflex"); $sh[]=array("?","atilde","#227","latin small letter a with tilde"); $sh[]=array("?","auml","#228","latin small letter a with diaeresis"); $sh[]=array("?","aring","#229","latin small letter a with ring above = latin small letter a ring"); $sh[]=array("?","aelig","#230","latin small letter ae = latin small ligature ae"); $sh[]=array("?","ccedil","#231","latin small letter c with cedilla"); $sh[]=array("è","egrave","#232","latin small letter e with grave"); $sh[]=array("é","eacute","#233","latin small letter e with acute"); $sh[]=array("ê","ecirc","#234","latin small letter e with circumflex"); $sh[]=array("?","euml","#235","latin small letter e with diaeresis"); $sh[]=array("ì","igrave","#236","latin small letter i with grave"); $sh[]=array("í","iacute","#237","latin small letter i with acute"); $sh[]=array("?","icirc","#238","latin small letter i with circumflex"); $sh[]=array("?","iuml","#239","latin small letter i with diaeresis"); $sh[]=array("e","eth","#240","latin small letter eth"); $sh[]=array("?","ntilde","#241","latin small letter n with tilde"); $sh[]=array("ò","ograve","#242","latin small letter o with grave"); $sh[]=array("ó","oacute","#243","latin small letter o with acute"); $sh[]=array("?","ocirc","#244","latin small letter o with circumflex"); $sh[]=array("?","otilde","#245","latin small letter o with tilde"); $sh[]=array("?","ouml","#246","latin small letter o with diaeresis"); $sh[]=array("÷","divide","#247","division sign"); $sh[]=array("?","oslash","#248","latin small letter o with stroke, = latin small letter o slash"); $sh[]=array("ù","ugrave","#249","latin small letter u with grave"); $sh[]=array("ú","uacute","#250","latin small letter u with acute"); $sh[]=array("?","ucirc","#251","latin small letter u with circumflex"); $sh[]=array("ü","uuml","#252","latin small letter u with diaeresis"); $sh[]=array("y","yacute","#253","latin small letter y with acute"); $sh[]=array("t","thorn","#254","latin small letter thorn"); $sh[]=array("?","yuml","#255","latin small letter y with diaeresis"); $sh[]=array("?","fnof","#402","latin small f with hook = function = florin"); $sh[]=array("Α","Alpha","#913","greek capital letter alpha"); $sh[]=array("Β","Beta","#914","greek capital letter beta"); $sh[]=array("Γ","Gamma","#915","greek capital letter gamma"); $sh[]=array("Δ","Delta","#916","greek capital letter delta"); $sh[]=array("Ε","Epsilon","#917","greek capital letter epsilon"); $sh[]=array("Ζ","Zeta","#918","greek capital letter zeta"); $sh[]=array("Η","Eta","#919","greek capital letter eta"); $sh[]=array("Θ","Theta","#920","greek capital letter theta"); $sh[]=array("Ι","Iota","#921","greek capital letter iota"); $sh[]=array("Κ","Kappa","#922","greek capital letter kappa"); $sh[]=array("Λ","Lambda","#923","greek capital letter lambda"); $sh[]=array("Μ","Mu","#924","greek capital letter mu"); $sh[]=array("Ν","Nu","#925","greek capital letter nu"); $sh[]=array("Ξ","Xi","#926","greek capital letter xi"); $sh[]=array("Ο","Omicron","#927","greek capital letter omicron"); $sh[]=array("Π","Pi","#928","greek capital letter pi"); $sh[]=array("Ρ","Rho","#929","greek capital letter rho"); $sh[]=array("Σ","Sigma","#931","greek capital letter sigma"); $sh[]=array("Τ","Tau","#932","greek capital letter tau"); $sh[]=array("Υ","Upsilon","#933","greek capital letter upsilon"); $sh[]=array("Φ","Phi","#934;","greek capital letter phi"); $sh[]=array("Χ","Chi","#935","greek capital letter chi"); $sh[]=array("Ψ","Psi","#936","greek capital letter psi"); $sh[]=array("Ω","Omega","#937","greek capital letter omega"); $sh[]=array("α","alpha","#945","greek small letter alpha"); $sh[]=array("β","beta","#946","greek small letter beta"); $sh[]=array("γ","gamma","#947","greek small letter gamma"); $sh[]=array("δ","delta","#948","greek small letter delta"); $sh[]=array("ε","epsilon","#949","greek small letter epsilon"); $sh[]=array("ζ","zeta","#950","greek small letter zeta"); $sh[]=array("η","eta","#951","greek small letter eta"); $sh[]=array("θ","theta","#952","greek small letter theta"); $sh[]=array("ι","iota","#953","greek small letter iota"); $sh[]=array("κ","kappa","#954","greek small letter kappa"); $sh[]=array("λ","lambda","#955","greek small letter lambda"); $sh[]=array("μ","mu","#956","greek small letter mu"); $sh[]=array("ν","nu","#957","greek small letter nu"); $sh[]=array("ξ","xi","#958","greek small letter xi"); $sh[]=array("ο","omicron","#959","greek small letter omicron"); $sh[]=array("π","pi","#960","greek small letter pi"); $sh[]=array("ρ","rho","#961","greek small letter rho"); $sh[]=array("?","sigmaf","#962","greek small letter final sigma"); $sh[]=array("σ","sigma","#963","greek small letter sigma"); $sh[]=array("τ","tau","#964","greek small letter tau"); $sh[]=array("υ","upsilon","#965","greek small letter upsilon"); $sh[]=array("φ","phi","#966","greek small letter phi"); $sh[]=array("χ","chi","#967","greek small letter chi"); $sh[]=array("ψ","psi","#968","greek small letter psi"); $sh[]=array("ω","omega","#969","greek small letter omega"); $sh[]=array("?","thetasym","#977","greek small letter theta symbol"); $sh[]=array("?","upsih","#978","greek upsilon with hook symbol"); $sh[]=array("?","piv","#982","greek pi symbol"); $sh[]=array("?","bull","#8226","bullet = black small circle"); $sh[]=array("…","hellip","#8230","horizontal ellipsis = three dot leader"); $sh[]=array("′","prime","#8242","prime = minutes = feet"); $sh[]=array("″","Prime","#8243","double prime = seconds = inches"); $sh[]=array("￣","oline","#8254","overline = spacing overscore"); $sh[]=array("?","frasl","#8260","fraction slash"); $sh[]=array("?","weierp","#8472","script capital P = power set = Weierstrass p"); $sh[]=array("?","image","#8465","blackletter capital I = imaginary part"); $sh[]=array("?","real","#8476","blackletter capital R = real part symbol"); $sh[]=array("?","trade","#8482","trade mark sign"); $sh[]=array("?","alefsym","#8501","alef symbol = first transfinite cardinal"); $sh[]=array("←","larr","#8592","leftwards arrow"); $sh[]=array("↑","uarr","#8593","upwards arrow"); $sh[]=array("→","rarr","#8594","rightwards arrow"); $sh[]=array("↓","darr","#8595","downwards arrow"); $sh[]=array("?","harr","#8596","left right arrow"); $sh[]=array("?","crarr","#8629","downwards arrow with corner leftwards = carriage return"); $sh[]=array("?","lArr","#8656","leftwards double arrow"); $sh[]=array("?","uArr","#8657","upwards double arrow"); $sh[]=array("?","rArr","#8658","rightwards double arrow"); $sh[]=array("?","dArr","#8659","downwards double arrow"); $sh[]=array("?","hArr","#8660","left right double arrow"); $sh[]=array("?","forall","#8704","for all"); $sh[]=array("?","part","#8706","partial differential"); $sh[]=array("?","exist","#8707","there exists"); $sh[]=array("?","empty","#8709","empty set = null set = diameter"); $sh[]=array("?","nabla","#8711","nabla = backward difference"); $sh[]=array("∈","isin","#8712","element of"); $sh[]=array("?","notin","#8713","not an element of"); $sh[]=array("?","ni","#8715","contains as member"); $sh[]=array("∏","prod","#8719","n-ary product = product sign"); $sh[]=array("∑","sum","#8721","n-ary sumation"); $sh[]=array("?","minus","#8722","minus sign"); $sh[]=array("?","lowast","#8727","asterisk operator"); $sh[]=array("√","radic","#8730","square root = radical sign"); $sh[]=array("∝","prop","#8733","proportional to"); $sh[]=array("∞","infin","#8734","infinity"); $sh[]=array("∠","ang","#8736","angle"); $sh[]=array("∧","and","#8743","logical and = wedge"); $sh[]=array("∨","or","#8744","logical or = vee"); $sh[]=array("∩","cap","#8745","intersection = cap"); $sh[]=array("∪","cup","#8746","union = cup"); $sh[]=array("∫","int","#8747","integral"); $sh[]=array("∴","there4","#8756","therefore"); $sh[]=array("～","sim","#8764","tilde operator = varies with = similar to"); $sh[]=array("?","cong","#8773","approximately equal to"); $sh[]=array("≈","asymp","#8776","almost equal to = asymptotic to"); $sh[]=array("≠","ne","#8800","not equal to"); $sh[]=array("≡","equiv","#8801","identical to"); $sh[]=array("≤","le","#8804","less-than or equal to"); $sh[]=array("≥","ge","#8805","greater-than or equal to"); $sh[]=array("?","sub","#8834","subset of"); $sh[]=array("?","sup","#8835","superset of"); $sh[]=array("?","nsub","#8836","not a subset of"); $sh[]=array("?","sube","#8838","subset of or equal to"); $sh[]=array("?","supe","#8839","superset of or equal to"); $sh[]=array("⊕","oplus","#8853","circled plus = direct sum"); $sh[]=array("?","otimes","#8855","circled times = vector product"); $sh[]=array("⊥","perp","#8869","up tack = orthogonal to = perpendicular"); $sh[]=array("?","sdot","#8901","dot operator"); $sh[]=array("?","lceil","#8968","left ceiling = apl upstile"); $sh[]=array("?","rceil","#8969","right ceiling"); $sh[]=array("?","lfloor","#8970","left floor = apl downstile"); $sh[]=array("?","rfloor","#8971","right floor"); $sh[]=array("?","lang","#9001","left-pointing angle bracket = bra"); $sh[]=array("?","rang","#9002","right-pointing angle bracket = ket"); $sh[]=array("?","loz","#9674","lozenge"); $sh[]=array("?","spades","#9824","black spade suit"); $sh[]=array("?","clubs","#9827","black club suit = shamrock"); $sh[]=array("?","hearts","#9829","black heart suit = valentine"); $sh[]=array("?","diams","#9830","black diamond suit"); $sh[]=array('"',"quot","#34","quotation mark = APL quote"); $sh[]=array("&","amp","#38","ampersand"); $sh[]=array("<","lt","#60","less-than sign"); $sh[]=array(">","gt","#62","greater-than sign"); $sh[]=array("?","OElig","#338","latin capital ligature OE"); $sh[]=array("?","oelig","#339","latin small ligature oe"); $sh[]=array("?","Scaron","#352","latin capital letter S with caron"); $sh[]=array("?","scaron","#353","latin small letter s with caron"); $sh[]=array("?","Yuml","#376","latin capital letter Y with diaeresis"); $sh[]=array("?","circ","#710","modifier letter circumflex accent"); $sh[]=array('',"tilde","#732","small tilde"); $sh[]=array("?","ensp","#8194","en space"); $sh[]=array("?","emsp","#8195","em space"); $sh1[]=array("?","thinsp","#8201","thin space"); $sh[]=array("–","ndash","#8211","en dash"); $sh[]=array("—","mdash","#8212","em dash"); $sh[]=array("‘","lsquo","#8216","left single quotation mark"); $sh[]=array("’","rsquo","#8217","right single quotation mark"); $sh[]=array("?","sbquo","#8218","single low-9 quotation mark"); $sh[]=array("“","ldquo","#8220","left double quotation mark"); $sh[]=array("”","rdquo","#8221","right double quotation mark"); $sh[]=array("?","bdquo","#8222","double low-9 quotation mark"); $sh[]=array("?","dagger","#8224","dagger"); $sh[]=array("?","Dagger","#8225","double dagger"); $sh[]=array("‰","permil","#8240","per mille sign"); $sh[]=array("?","lsaquo","#8249","single left-pointing angle quotation mark"); $sh[]=array("?","rsaquo","#8250","single right-pointing angle quotation mark"); $sh[]=array(" |