php过滤HTML标签、属性等正则表达式汇总
这篇文章主要介绍了php过滤HTML标签、属性等正则表达式汇总,本文使用代码实例给出了过滤HTML内容的正则表达式,具体说明请参阅代码中的注释,本文对使用PHP做采集的朋友有比较大的作用,需要的朋友可以参考下
- $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);
3,过滤部分html标签的正则表达式的排除式(比如排除<p>,即不过滤<p>):
</?[^pP/>]+>
4,过滤部分html标签的正则表达式的枚举式(比如需要过滤<a><p><b>等):
</?[aApPbB][^>]*>
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):
\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):
(\s)alt=[^\s]*