<?php
$str=preg_replace('/\x80-\xFF/', '', $str);//刪除十六進制字符
$str=preg_replace('/\\x[0-9A-F]{2}/', '', $str);//刪除十六進制形式的字符串
$str=preg_replace("/\s+/", " ", $str); //過濾多余回車
$str=preg_replace("/<[ ]+/si","<",$str); //過濾<__("<"號后面帶空格)
$str=preg_replace("/<!–.?–>/si","",$str); //注釋
$str=preg_replace("/<(!.?)>/si","",$str); //過濾DOCTYPE
$str=preg_replace("/<(/?html.?)>/si","",$str); //過濾html標簽
$str=preg_replace("/<(/?br.?)>/si","",$str); //過濾br標簽
$str=preg_replace("/<(/?head.?)>/si","",$str); //過濾head標簽
$str=preg_replace("/<(/?meta.?)>/si","",$str); //過濾meta標簽
$str=preg_replace("/<(/?body.?)>/si","",$str); //過濾body標簽
$str=preg_replace("/<(/?link.?)>/si","",$str); //過濾link標簽
$str=preg_replace("/<(/?form.?)>/si","",$str); //過濾form標簽
$str=preg_replace("/cookie/si","COOKIE",$str); //過濾COOKIE標簽
$str=preg_replace("/<(applet.?)>(.?)<(/applet.?)>/si","",$str); //過濾applet標簽
$str=preg_replace("/<(/?applet.?)>/si","",$str); //過濾applet標簽
$str=preg_replace("/<(style.?)>(.?)<(/style.?)>/si","",$str); //過濾style標簽
$str=preg_replace("/<(/?style.?)>/si","",$str); //過濾style標簽
$str=preg_replace("/<(title.?)>(.?)<(/title.?)>/si","",$str); //過濾title標簽
$str=preg_replace("/<(/?title.?)>/si","",$str); //過濾title標簽
$str=preg_replace("/<(object.?)>(.?)<(/object.?)>/si","",$str); //過濾object標簽
$str=preg_replace("/<(/?objec.?)>/si","",$str); //過濾object標簽
$str=preg_replace("/<(noframes.?)>(.?)<(/noframes.?)>/si","",$str); //過濾noframes標簽
$str=preg_replace("/<(/?noframes.?)>/si","",$str); //過濾noframes標簽
$str=preg_replace("/<(i?frame.?)>(.?)<(/i?frame.?)>/si","",$str); //過濾frame標簽
$str=preg_replace("/<(/?i?frame.?)>/si","",$str); //過濾frame標簽
$str=preg_replace("/<(script.?)>(.?)<(/script.?)>/si","",$str); //過濾script標簽
$str=preg_replace("/<(/?script.?)>/si","",$str); //過濾script標簽
$str=preg_replace("/javascript/si","Javascript",$str); //過濾script標簽
$str=preg_replace("/vbscript/si","Vbscript",$str); //過濾script標簽
$str=preg_replace("/on([a-z]+)\s=/si","On\1=",$str); //過濾script標簽
$str=preg_replace("/&#/si","&＃",$str); //過濾script標簽，
$str = preg_replace( "@<script(.?)</script>@is", "", $str ); //過濾script代碼
$str = preg_replace( "@<iframe(.?)</iframe>@is", "", $str );
$str = preg_replace( "@<style(.?)</style>@is", "", $str );
$str = preg_replace( "@<(.?)>@is", "", $str );
?>
