php正则过滤html标签、空格、换行符的代码(附说明)
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php正则过滤html标签、空格、换行符的代码(附说明)，
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<div class="codetitle"><a style="CURSOR: pointer" data="53425" class="copybut" id="copybut53425" onclick="doCopy('code53425')"> 代码如下:
<div class="codebody" id="code53425">
$str=preg_replace("/\s+/"," ",$str); //过滤多余回车
$str=preg_replace("/<
+/si","<",$str); //过滤<__("<"号后面带空格) $str=preg_replace("/<!--.
?-->/si","",$str); //注释
$str=preg_replace("/<(!.?)>/si",$str); //过滤DOCTYPE
$str=preg_replace("/<(\/?html.
?)>/si",$str); //过滤html标签
$str=preg_replace("/<(\/?head.?)>/si",$str); //过滤head
标签 $str=preg_replace("/<(\/?meta.
?)>/si",$str); //过滤Meta标签
$str=preg_replace("/<(\/?body.?)>/si",$str); //过滤body
标签 $str=preg_replace("/<(\/?link.
?)>/si",$str); //过滤link标签
$str=preg_replace("/<(\/?form.?)>/si",$str); //过滤form
标签 $str=preg_replace("/cookie/si","COOKIE",$str); //过滤COOKIE
标签 $str=preg_replace("/<(applet.
?)>(.?)<(\/applet.
?)>/si",$str); //过滤applet标签
$str=preg_replace("/<(\/?applet.?)>/si",$str); //过滤applet
标签 $str=preg_replace("/<(style.
?)>(.?)<(\/style.
?)>/si",$str); //过滤style标签
$str=preg_replace("/<(\/?style.?)>/si",$str); //过滤style
标签 $str=preg_replace("/<(title.
?)>(.?)<(\/title.
?)>/si",$str); //过滤title标签
$str=preg_replace("/<(\/?title.?)>/si",$str); //过滤title
标签 $str=preg_replace("/<(object.
?)>(.?)<(\/object.
?)>/si",$str); //过滤object标签
$str=preg_replace("/<(\/?objec.?)>/si",$str); //过滤object
标签 $str=preg_replace("/<(noframes.
?)>(.?)<(\/noframes.
?)>/si",$str); //过滤noframes标签
$str=preg_replace("/<(\/?noframes.?)>/si",$str); //过滤noframes
标签 $str=preg_replace("/<(i?frame.
?)>(.?)<(\/i?frame.
?)>/si",$str); //过滤frame标签
$str=preg_replace("/<(\/?i?frame.?)>/si",$str); //过滤frame
标签 $str=preg_replace("/<(script.
?)>(.?)<(\/script.
?)>/si",$str); //过滤script标签
$str=preg_replace("/<(\/?script.?)>/si",$str); //过滤script
标签 $str=preg_replace("/javascript/si","Javascript",$str); //过滤script
标签 $str=preg_replace("/vbscript/si","Vbscript",$str); //过滤script
标签 $str=preg_replace("/on([a-z]+)\s*=/si","On\1=",$str); //过滤script
标签 $str=preg_replace("/&#/si","&＃",$str); //过滤script
标签，如javAsCript:alert(
