php過濾HTML標籤、屬性等正則表達式

本文是本站小編搜索整理的使用代碼實例給出了過濾HTML內容的正則表達式,具體說明請參閱代碼中的註釋,感興趣的朋友一起學習吧!!想了解更多相關信息請持續關注我們應屆畢業生考試網!

php過濾HTML標籤、屬性等正則表達式

$str=preg_replace("/s+/", " ", $str); //過濾多餘回車

$str=preg_replace("/<[ ]+/si","<",$str); //過濾<__("<"號後面帶空格)

$str=preg_replace("/<!--.*?-->/si","",$str); //註釋

$str=preg_replace("/<(!.*?)>/si","",$str); //過濾DOCTYPE

$str=preg_replace("/<(/?html.*?)>/si","",$str); //過濾html標籤

$str=preg_replace("/<(/?head.*?)>/si","",$str); //過濾head標籤

$str=preg_replace("/<(/?meta.*?)>/si","",$str); //過濾meta標籤

$str=preg_replace("/<(/?body.*?)>/si","",$str); //過濾body標籤

$str=preg_replace("/<(/?link.*?)>/si","",$str); //過濾link標籤

$str=preg_replace("/<(/?form.*?)>/si","",$str); //過濾form標籤

$str=preg_replace("/cookie/si","COOKIE",$str); //過濾COOKIE標籤

$str=preg_replace("/<(applet.*?)>(.*?)<(/applet.*?)>/si","",$str); //過濾applet標籤

$str=preg_replace("/<(/?applet.*?)>/si","",$str); //過濾applet標籤

$str=preg_replace("/<(style.*?)>(.*?)<(/style.*?)>/si","",$str); //過濾style標籤

$str=preg_replace("/<(/?style.*?)>/si","",$str); //過濾style標籤

$str=preg_replace("/<(title.*?)>(.*?)<(/title.*?)>/si","",$str); //過濾title標籤

$str=preg_replace("/<(/?title.*?)>/si","",$str); //過濾title標籤

$str=preg_replace("/<(object.*?)>(.*?)<(/object.*?)>/si","",$str); //過濾object標籤

$str=preg_replace("/<(/?objec.*?)>/si","",$str); //過濾object標籤

$str=preg_replace("/<(noframes.*?)>(.*?)<(/noframes.*?)>/si","",$str); //過濾noframes標籤

$str=preg_replace("/<(/?noframes.*?)>/si","",$str); //過濾noframes標籤

$str=preg_replace("/<(i?frame.*?)>(.*?)<(/i?frame.*?)>/si","",$str); //過濾frame標籤

$str=preg_replace("/<(/?i?frame.*?)>/si","",$str); //過濾frame標籤

$str=preg_replace("/<(script.*?)>(.*?)<(/script.*?)>/si","",$str); //過濾script標籤

$str=preg_replace("/<(/?script.*?)>/si","",$str); //過濾script標籤

$str=preg_replace("/javascript/si","Javascript",$str); //過濾script標籤

$str=preg_replace("/vbscript/si","Vbscript",$str); //過濾script標籤

$str=preg_replace("/on([a-z]+)s*=/si","On1=",$str); //過濾script標籤

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

  清除空格,換行

function DeleteHtml($str)

{

$str = trim($str);

$str = strip_tags($str,"");

$str = ereg_replace("t","",$str);

$str = ereg_replace("rn","",$str);

$str = ereg_replace("r","",$str);

$str = ereg_replace("n","",$str);

$str = ereg_replace(" "," ",$str);

return trim($str);

}

  過濾HTML屬性

1,過濾所有html標籤的正則表達式:

複製代碼 代碼如下:

</?[^>]+>

//過濾所有html標籤的屬性的正則表達式:

$html = preg_replace("/<([a-zA-Z]+)[^>]*>/","<1>",$html);

3,過濾部分html標籤的正則表達式的'排除式(比如排除<p>,即不過濾<p>):

複製代碼 代碼如下:

</?[^pP/>]+>

4,過濾部分html標籤的正則表達式的枚舉式(比如需要過濾<a><p><b>等):

複製代碼 代碼如下:

</?[aApPbB][^>]*>

5,過濾部分html標籤的屬性的正則表達式的排除式(比如排除alt屬性,即不過濾alt屬性):

複製代碼 代碼如下:

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

6,過濾部分html標籤的屬性的正則表達式的枚舉式(比如alt屬性):

複製代碼 代碼如下:

(s)alt=[^s]*