ThinkPHP 模板substr的截取字符串函数详解

ThinkPHP 模板substr的截取字符串函数

在Common/function.php加上以下代码

    /**
    ** 截取中文字符串
    **/
    function msubstr($str, $start=0, $length, $charset="utf-8", $suffix=true){
     if(function_exists("mb_substr")){
     $slice= mb_substr($str, $start, $length, $charset);
     }elseif(function_exists('iconv_substr')) {
     $slice= iconv_substr($str,$start,$length,$charset);
     }else{
     $re['utf-8'] = "/[x01-x7f]|[xc2-xdf][x80-xbf]|[xe0-xef][x80-xbf]{2}|[xf0-xff][x80-xbf]{3}/";
     $re['gb2312'] = "/[x01-x7f]|[xb0-xf7][xa0-xfe]/";
     $re['gbk'] = "/[x01-x7f]|[x81-xfe][x40-xfe]/";
     $re['big5'] = "/[x01-x7f]|[x81-xfe]([x40-x7e]|xa1-xfe])/";
     preg_match_all($re[$charset], $str, $match);
     $slice = join("",array_slice($match[0], $start, $length));
     } 
     $fix='';
     if(strlen($slice) < strlen($str)){
      $fix='...';
     }
     return $suffix ? $slice.$fix : $slice;
    }

前端页面需要截取字符串时

    {$v.title|msubstr=0,5}

/****案例****/

    //新闻列表
     public function NewsList(){
     $this->assign('title','news');
     $p = I('page',1);
     $listRows = 10;
     $News = M('news');
     $info = $News->field('id,title,subtitle,publish_date,img,content')->where(array('type'=>'news','status'=>'1'))->order('flag desc,sort_no desc')->page($p,$listRows)->select();
     $this->assign('news',$info);
     $count = $News->where(array('type'=>'news','status'=>'1'))->count();
     $Page = new Page($count,$listRows);
     $show = $Page->show();
     $this->assign('page',$show);
     //var_dump($info);
     $this->display();
     }

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。