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php过滤HTML标签、属性等正则表达式汇总_php实例

WBOY
WBOY原创
2016-05-16 20:36:031659浏览
$str=preg_replace("/\s+/", " ", $str); //过滤多余回车
$str=preg_replace("/<[ ]+/si","<",$str); //过滤<__("<"号后面带空格)
 
$str=preg_replace("/<\!--.*&#63;-->/si","",$str); //注释
$str=preg_replace("/<(\!.*&#63;)>/si","",$str); //过滤DOCTYPE
$str=preg_replace("/<(\/&#63;html.*&#63;)>/si","",$str); //过滤html标签
$str=preg_replace("/<(\/&#63;head.*&#63;)>/si","",$str); //过滤head标签
$str=preg_replace("/<(\/&#63;meta.*&#63;)>/si","",$str); //过滤meta标签
$str=preg_replace("/<(\/&#63;body.*&#63;)>/si","",$str); //过滤body标签
$str=preg_replace("/<(\/&#63;link.*&#63;)>/si","",$str); //过滤link标签
$str=preg_replace("/<(\/&#63;form.*&#63;)>/si","",$str); //过滤form标签
$str=preg_replace("/cookie/si","COOKIE",$str); //过滤COOKIE标签
 
$str=preg_replace("/<(applet.*&#63;)>(.*&#63;)<(\/applet.*&#63;)>/si","",$str); //过滤applet标签
$str=preg_replace("/<(\/&#63;applet.*&#63;)>/si","",$str); //过滤applet标签
 
$str=preg_replace("/<(style.*&#63;)>(.*&#63;)<(\/style.*&#63;)>/si","",$str); //过滤style标签
$str=preg_replace("/<(\/&#63;style.*&#63;)>/si","",$str); //过滤style标签
 
$str=preg_replace("/<(title.*&#63;)>(.*&#63;)<(\/title.*&#63;)>/si","",$str); //过滤title标签
$str=preg_replace("/<(\/&#63;title.*&#63;)>/si","",$str); //过滤title标签
 
$str=preg_replace("/<(object.*&#63;)>(.*&#63;)<(\/object.*&#63;)>/si","",$str); //过滤object标签
$str=preg_replace("/<(\/&#63;objec.*&#63;)>/si","",$str); //过滤object标签
 
$str=preg_replace("/<(noframes.*&#63;)>(.*&#63;)<(\/noframes.*&#63;)>/si","",$str); //过滤noframes标签
$str=preg_replace("/<(\/&#63;noframes.*&#63;)>/si","",$str); //过滤noframes标签
 
$str=preg_replace("/<(i&#63;frame.*&#63;)>(.*&#63;)<(\/i&#63;frame.*&#63;)>/si","",$str); //过滤frame标签
$str=preg_replace("/<(\/&#63;i&#63;frame.*&#63;)>/si","",$str); //过滤frame标签
 
$str=preg_replace("/<(script.*&#63;)>(.*&#63;)<(\/script.*&#63;)>/si","",$str); //过滤script标签
$str=preg_replace("/<(\/&#63;script.*&#63;)>/si","",$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( 

清除空格,换行

function DeleteHtml($str)
{
$str = trim($str);
$str = strip_tags($str,"");
$str = ereg_replace("\t","",$str);
$str = ereg_replace("\r\n","",$str);
$str = ereg_replace("\r","",$str);
$str = ereg_replace("\n","",$str);
$str = ereg_replace(" "," ",$str);
return trim($str);
}

过滤HTML属性

1,过滤所有html标签的正则表达式:

复制代码 代码如下:
 
5aaa36879ff301c6d0b1068c12cb6ae8]+>
 
//过滤所有html标签的属性的正则表达式:
 
$html = preg_replace("/ea75fdb451c341a379d70bffaeb9f22f]*>/","3241bd58224714b755a38cb9dbed99c3",$html);

3,过滤部分html标签的正则表达式的排除式(比如排除e388a4556c0f65e1904146cc1a846bee,即不过滤e388a4556c0f65e1904146cc1a846bee):
复制代码 代码如下:

20ad93749e4c50ac81116e749b0a30a1]+>

4,过滤部分html标签的正则表达式的枚举式(比如需要过滤3499910bf9dac5ae3c52d5ede7383485e388a4556c0f65e1904146cc1a846beea4b561c25d9afb9ac8dc4d70affff419等):
复制代码 代码如下:

b208e117eb6632ba467ce28a9335522d]*>

5,过滤部分html标签的属性的正则表达式的排除式(比如排除alt属性,即不过滤alt属性):
复制代码 代码如下:

\s(?!alt)[a-zA-Z]+=[^\s]*

6,过滤部分html标签的属性的正则表达式的枚举式(比如alt属性):
复制代码 代码如下:

(\s)alt=[^\s]*
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