织梦dedecms文章中屏蔽与过滤标签实例代码

文章的body字段屏蔽a标签和iframe标签：

{dede:field.body runphp="yes"} 
 
    $str=@me; 
 
    @me=''; 
 
    $str1=''; 
 
    $str1 = preg_replace( "@<iframe(.*?)</iframe>@is", "", $str );  
 
    $str1 = preg_replace("/<a[^>]*>(.*?)</a>/is", "$1", $str1); 
 
    @me=$str1; 
 
{/dede:field.body} 

以下是过滤其他标签的正则表达式：

$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 
 
$str=preg_replace("/<(/?br.*?)>/si","",$str); //过滤br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， 
 
$str = preg_replace( "@<script(.*?)</script>@is", "", $str ); //过滤script代码 
 
$str = preg_replace( "@<iframe(.*?)</iframe>@is", "", $str ); 
 
$str = preg_replace( "@<style(.*?)</style>@is", "", $str ); 
 
$str = preg_replace( "@<(.*?)>@is", "", $str );