thinkphp截取文字部分字符串

来源：互联网发布：淘宝美术设计招聘编辑：程序博客网时间：2024/05/17 02:58

ThinkPHP有一个内置字符截取函数msubstr()如下：

msubstr($str, $start=0, $length, $charset=”utf-8″, $suffix=true) $str:要截取的字符串 $start=0：开始位置，默认从0开始 $length：截取长度 $charset=”utf-8″：字符编码，默认UTF－8 $suffix=true：是否在截取后的字符后面显示省略号，默认true显示，false为不显示

在function.php定义msubstr函数

function msubstr($str, $start=0, $length, $charset="utf-8", $suffix=true){    if(function_exists("mb_substr")){        if($suffix){            return mb_substr($str, $start, $length, $charset)."...";        }else{            return mb_substr($str, $start, $length, $charset);        }    }elseif(function_exists('iconv_substr')) {        if($suffix){            return iconv_substr($str,$start,$length,$charset)."...";        }else{            return iconv_substr($str,$start,$length,$charset);        }    }    $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, $length));    if($suffix){        return $slice."...";    }else{        return $slice;    }}

调用该函数：

{$vo['title']|msubstr=5,5,'utf-8',false}

0 0