概述
1.strip_tags(剥去字符串中的 HTML 标签)
strip_tags() 函数剥去字符串中的 HTML、XML 以及 PHP 的标签。
2.字符串替换
str_replace(array(“ ”,” ”,”t”,”rn”,”r”,”n”),array(“”,”“,”“,”“,”“,”“)
3.利用正则表达式(效率稍微低一些)
str=pregreplace("/s+/","",
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,
str); //过滤多余回车
str=pregreplace("/<[]+/si","<",
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<
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,
"<"
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str); //过滤<__(“<”号后面带空格)
str=pregreplace("/<−−.∗?−−>/si","",
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"
/
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−
−
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−
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/
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,
str); //注释
str=pregreplace("/<(.∗?)>/si","",
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str); //过滤DOCTYPE
str=pregreplace("/<(/?html.∗?)>/si","",
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str); //过滤html标签
str=pregreplace("/<(/?head.∗?)>/si","",
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str); //过滤head标签
str=pregreplace("/<(/?meta.∗?)>/si","",
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>
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,
str); //过滤meta标签
str=pregreplace("/<(/?body.∗?)>/si","",
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∗
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str); //过滤body标签
str=pregreplace("/<(/?link.∗?)>/si","",
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str); //过滤link标签
str=pregreplace("/<(/?form.∗?)>/si","",
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str); //过滤form标签
str=pregreplace("/cookie/si","COOKIE",
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"
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"
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"
,
str); //过滤COOKIE标签
str=pregreplace("/<(applet.∗?)>(.∗?)<(/applet.∗?)>/si","",
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str); //过滤applet标签
str=pregreplace("/<(/?applet.∗?)>/si","",
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str); //过滤applet标签
str=pregreplace("/<(style.∗?)>(.∗?)<(/style.∗?)>/si","",
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str); //过滤style标签
str=pregreplace("/<(/?style.∗?)>/si","",
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str); //过滤style标签
str=pregreplace("/<(title.∗?)>(.∗?)<(/title.∗?)>/si","",
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str); //过滤title标签
str=pregreplace("/<(/?title.∗?)>/si","",
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str=pregreplace("/<(object.∗?)>(.∗?)<(/object.∗?)>/si","",
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str=pregreplace("/<(/?objec.∗?)>/si","",
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str); //过滤object标签
str=pregreplace("/<(noframes.∗?)>(.∗?)<(/noframes.∗?)>/si","",
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str); //过滤noframes标签
str=pregreplace("/<(/?noframes.∗?)>/si","",
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str); //过滤noframes标签
str=pregreplace("/<(i?frame.∗?)>(.∗?)<(/i?frame.∗?)>/si","",
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str=pregreplace("/<(/?i?frame.∗?)>/si","",
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str); //过滤frame标签
str=pregreplace("/<(script.∗?)>(.∗?)<(/script.∗?)>/si","",
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str); //过滤script标签
str=pregreplace("/<(/?script.∗?)>/si","",
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str); //过滤script标签
str=pregreplace("/javascript/si","Javascript",
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,
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str); //过滤script标签
str=pregreplace("/vbscript/si","Vbscript",
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"
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str); //过滤script标签
str=pregreplace("/on([a−z]+)s∗=/si","On1=",
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1
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,
str); //过滤script标签
str=preg_replace("/&#/si","&＃",
str=preg_replace("/&#/si","&＃",
str); //过滤script标签，如javAsCript:alert(
str=pregreplace("/<(/?.∗?)>/si","",
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str);//匹配任意html标签方式
转载来自https://www.cnblogs.com/jinrenming/p/5128082.html
this−>content=pregreplace("/<(/?.∗?)>/si","",
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>
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,
""
,
this->content);//过滤大多数的html标签
最后
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