php正則替換標簽的實現方法：首先通過“strip_tags”函數剝去字符串中的HTML標簽；然后利用正則表達式替換標簽，代碼語句如“pregreplace("/\\s+/","",str=pregreplace("/\\s+/","")”。

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1.strip_tags(剝去字符串中的 HTML 標簽)

strip_tags() 函數剝去字符串中的 HTML、XML 以及 PHP 的標簽。

2.字符串替換

str_replace(array(“ ”,” ”,”\\t”,”\\r\\n”,”\\r”,”\\n”),array(“”,”“,”“,”“,”“,”“)

3.利用正則表達式(效率稍微低一些)

str=pregreplace("/\\s+/","",str); //過濾多余回車

str=pregreplace("/<[]+/si","<",str); //過濾<__(“<”號后面帶空格)

str=pregreplace("/<??.????>/si","",str); //注釋

str=pregreplace("/<(.??)>/si","",str); //過濾DOCTYPE

str=pregreplace("/<(\\/?html.??)>/si","",str); //過濾html標簽

str=pregreplace("/<(\\/?head.??)>/si","",str); //過濾head標簽

str=pregreplace("/<(\\/?meta.??)>/si","",str); //過濾meta標簽

str=pregreplace("/<(\\/?body.??)>/si","",str); //過濾body標簽

str=pregreplace("/<(\\/?link.??)>/si","",str); //過濾link標簽

str=pregreplace("/<(\\/?form.??)>/si","",str); //過濾form標簽

str=pregreplace("/cookie/si","COOKIE",str); //過濾COOKIE標簽

str=pregreplace("/<(applet.??)>(.??)<(\\/applet.??)>/si","",str); //過濾applet標簽

str=pregreplace("/<(\\/?applet.??)>/si","",str); //過濾applet標簽

str=pregreplace("/<(style.??)>(.??)<(\\/style.??)>/si","",str); //過濾style標簽

str=pregreplace("/<(\\/?style.??)>/si","",str); //過濾style標簽

str=pregreplace("/<(title.??)>(.??)<(\\/title.??)>/si","",str); //過濾title標簽

str=pregreplace("/<(\\/?title.??)>/si","",str); //過濾title標簽

str=pregreplace("/<(object.??)>(.??)<(\\/object.??)>/si","",str); //過濾object標簽

str=pregreplace("/<(\\/?objec.??)>/si","",str); //過濾object標簽

str=pregreplace("/<(noframes.??)>(.??)<(\\/noframes.??)>/si","",str); //過濾noframes標簽

str=pregreplace("/<(\\/?noframes.??)>/si","",str); //過濾noframes標簽

str=pregreplace("/<(i?frame.??)>(.??)<(\\/i?frame.??)>/si","",str); //過濾frame標簽

str=pregreplace("/<(\\/?i?frame.??)>/si","",str); //過濾frame標簽

str=pregreplace("/<(script.??)>(.??)<(\\/script.??)>/si","",str); //過濾script標簽

str=pregreplace("/<(\\/?script.??)>/si","",str); //過濾script標簽

str=pregreplace("/javascript/si","Javascript",str); //過濾script標簽

str=pregreplace("/vbscript/si","Vbscript",str); //過濾script標簽

str=pregreplace("/on([a?z]+)\\s?=/si","On1=",str); //過濾script標簽

str=preg_replace("/&#/si","&＃",str); //過濾script標簽，如javAsCript:alert(

str=pregreplace("/<(\\/?.??)>/si","",str);//匹配任意html標簽方式

this?>content=pregreplace("/<(\\/?.??)>/si","",this->content);//過濾大多數的html標簽

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