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南阳PHP过滤各种html标签

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(" "," "," "," "," "," "),array("","","","","","")

 

3.利用正则表达式(效率稍微低一些)

$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(


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