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
functionDeleteHtml($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); returntrim($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]*
PS:关于正则,这里再为大家推荐2款非常方便的正则表达式工具供大家参考使用:
JavaScript正则表达式在线测试工具:
http://tools.jb51.net/regex/javascript
正则表达式在线生成工具:
http://tools.jb51.net/regex/create_reg