php使用正则去掉html的方法：首先创建一个PHP示例文件；然后通过正则表达式“preg_replace("/<([a-za-z]+)[^>]*>/","<\\\\1>",$html);”过滤所有html标签的属性即可。

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php过滤HTML标签、属性等正则表达式汇总

$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(

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：

</?[^>]+>
  
//过滤所有html标签的属性的正则表达式：
  
$html = preg_replace("/<([a-zA-Z]+)[^>]*>/","<\\\\1>",$html);