zoukankan      html  css  js  c++  java
  • php过滤html标签截取部分内容

    <?php
    
    $str = '<span>fdsfsdf</span><a href="#">href</a>';
    echo htmlspecialchars($str).'<Br>';
    echo strip_tags($str);
    
    ?>
    
    用strip_tags能把Html标签都去掉,然后调用truncate函数
    $array[$row['content_id']]['content_title']=truncate(strip_tags($row['content_title']),21);
    function truncate($string,$length,$append = true){
        $string = trim($string);
        $strlength = strlen($string);
        if ($length == 0 || $length >= $strlength){
            return $string;
        }elseif ($length < 0){
            $length = $strlength + $length;
            if ($length < 0)
            {
                $length = $strlength;
            }
        }
        if (function_exists('mb_substr')){
            $newstr = mb_substr($string, 0, $length,"UTF-8");
        }elseif (function_exists('iconv_substr')){
            $newstr = iconv_substr($string, 0, $length,"UTF-8");
        }else{
          for($i=0;$i<$length;$i++){
                $tempstring=substr($string,0,1);
                if(ord($tempstring)>127){
                   $i++;
                   if($i<$length){
                      $newstring[]=substr($string,0,3);
                      $string=substr($string,3);
                   }
                }else{
                   $newstring[]=substr($string,0,1);
                   $string=substr($string,1);
                }
             }
          $newstr =join($newstring);
        }
        if ($append && $string != $newstr){
            $newstr .= '...';
        }
        return $newstr;
    }
    

      

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  • 原文地址:https://www.cnblogs.com/as3lib/p/6692165.html
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