方法一,代码如下:
echo strip_tags("hello <b>world!</b>");
strip_tags --- 去除字串中的html和php标签
语法:string strip_tags (string str [, string allowable_tags])
说明:此函式试着从给予的字串中去除所有html和php标签,如果是不完整或是假的标签时则会有错误,它和fgetss( )使用相同的方法去除标签,代码如下:
$reg = '/(</?p>|<brs*/?>)|<.+?>/i';echo preg_replace($reg,'$1',$str);
过滤方法二,代码如下:
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<$len;$i++){ $ss=substr($str,$i,1); if(ord($ss)==60){ //ord("<")==60 $st=$i;//开源代码phprm.com } if(ord($ss)==62){ //ord(">")==62 $et=$i; if($st!=-1){ $stmp[]=substr($str,$st,$et-$st+1); } } } $str=str_replace($stmp,"",$str); return $str; }
过滤方法三,代码如下:
function clear_html_label($html) { $search = array ("'<script[^>]*?>.*?</script>'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); } //实例应用 $string ='aaa<br /> <script>fdsafsa'; echo clear_html_label($string);//aaa fdsafsa

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