ThinkPHP 模板substr的截取字符串函数详解

2021-04-13 17:15yangzailu1990 PHP教程

这篇文章主要介绍了ThinkPHP 模板substr的截取字符串函数详解,具有一定的参考价值，感兴趣的小伙伴们可以参考一下。

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

1	`{$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();

									 }