首先分享一些比较常见的
$str=preg_replace("/]*?srcs*=s*(''|")(.*?)\1[^>]*?/?s*>/i","", $str); //过滤img标签 $str=preg_replace("/s+/","", $str); //过滤多余回车 $str=preg_replace("//si","",$str); //注释 $str=preg_replace("//si","",$str); //过滤DOCTYPE $str=preg_replace("//si","",$str); //过滤html标签 $str=preg_replace("//si","",$str); //过滤head标签 $str=preg_replace("//si","",$str); //过滤meta标签 $str=preg_replace("//si","",$str); //过滤body标签 $str=preg_replace("//si","",$str); //过滤link标签 $str=preg_replace("//si","",$str); //过滤form标签 $str=preg_replace("/cookie/si","COOKIE",$str); //过滤COOKIE标签 $str=preg_replace("/(.*?)/si","",$str); //过滤applet标签 $str=preg_replace("//si","",$str); //过滤applet标签 $str=preg_replace("/(.*?)/si","",$str); //过滤style标签 $str=preg_replace("//si","",$str); //过滤style标签 $str=preg_replace("/(.*?)/si","",$str); //过滤title标签 $str=preg_replace("//si","",$str); //过滤title标签 $str=preg_replace("/(.*?)/si","",$str); //过滤object标签 $str=preg_replace("//si","",$str); //过滤object标签 $str=preg_replace("/(.*?)/si","",$str); //过滤noframes标签 $str=preg_replace("//si","",$str); //过滤noframes标签 $str=preg_replace("/(.*?)/si","",$str); //过滤frame标签 $str=preg_replace("//si","",$str); //过滤frame标签 $str=preg_replace("/(.*?)/si","",$str); //过滤script标签 $str=preg_replace("//si","",$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
更简单些的写法:
function delhtml($str){ //清除html标签 $st=-1; //开始 $et=-1; //结束 $stmp=array(); $stmp[]=" "; $len=strlen($str); for($i=0;$i")==62 $et=$i; if($st!=-1){ $stmp[]=substr($str,$st,$et-$st+1); } } } $str=str_replace($stmp,"",$str); return $str; }
再来一个:
function clear_html_label($html) { $search = array ("''''si", "'']*?>''si", "''([rn])[s]+''", "''&(quot|#34);''i", "''&(amp|#38);''i", "''&(lt|#60);''i", "''&(gt|#62);''i", "''&(nbsp|#160);''i", "''&(iexcl|#161);''i", "''&(cent|#162);''i", "''&(pound|#163);''i", "''&(copy|#169);''i", "''(d+);''e"); $replace = array ("", "", "1", """, "&", "", " ", chr(161), chr(162), chr(163), chr(169), "chr(1)"); return preg_replace($search, $replace, $html); }
以上三种方法均可以实现,不过各有优劣,小伙伴们根据自己的项目需求来选择吧。
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