php 过滤html标签的函数代码
php 过滤html标签的函数代码本文章提供四款利用php 过滤html标签的函数代码,方法一最简单的利用了php自带函数strip_tags来过滤所有的html标签,方法二利用了正则表达式来过滤html标签,方法三是清除HTML标签的用户自定义函数,根据ascii编码值来判断是否为字母再过滤。
php教程 过滤html标签的函数代码
本文章提供四款利用php 过滤html标签的函数代码,方法一最简单的利用了php自带函数strip_tags来过滤所有的html标签,方法二利用了正则表达式来过滤html标签,方法三是清除html标签的用户自定义函数,根据ascii编码值来判断是否为字母再过滤。
*/
//最直接过滤html方法
strip_tags();
//方法二利用正则过滤
function _filter( $string ) {
return str_replace(array("n","rn","r",' '),array('
','
','
',' '),strip_tags($string,''));
}
//正则二
preg_replace('/(
){1,}/is','
', $str);
//正则三
function delhtml($str){ //清除html标签
$st=-1; //开始
$et=-1; //结束
$stmp=array();
$stmp[]=" ";
$len=strlen($str);
for($i=0;$i $ss=substr($str,$i,1);
if(ord($ss)==60){ //ord(" $st=$i;
}
if(ord($ss)==62){ //ord(">")==62
$et=$i;
if($st!=-1){
$stmp[]=substr($str,$st,$et-$st+1);
}
}
}
$str=str_replace($stmp,"",$str);
return $str;
}
//$str='
www.bkjia.com
/>
';
$reg = '/(|)|<.>/i'; *>
echo preg_replace($reg,'$1',$str);

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