编程语言
系统研发与运维
linux
php
深度学习
帮助
函数
测试
charset
utf-8
中文字串截取
无乱码
摘要: <?php // 实现中文字串截取无乱码的函数 (适用于 utf-8) function substr_text($str, $start=0, $length, $charset="utf-8", $suffix="") { if(function_exists("mb_substr")) { // 判断中文长度, 超过指定长度超出部分显示.
- <?php
- // 实现中文字串截取无乱码的函数 (适用于 utf-8)
- function substr_text($str, $start=0, $length, $charset="utf-8", $suffix="")
- {
- if(function_exists("mb_substr"))
- {
- // 判断中文长度, 超过指定长度超出部分显示...
- if (mb_strlen($str,$charset)>$length)
- {
- return mb_substr($str, $start, $length, $charset).$suffix.'...';
- }
- else
- {
- return mb_substr($str, $start, $length, $charset).$suffix;
- }
- }
- elseif(function_exists('iconv_substr'))
- {
- // 判断中文长度, 超过指定长度超出部分显示...
- if (mb_strlen($str,$charset)>$length)
- {
- return iconv_substr($str,$start,$length,$charset).$suffix.'...';
- }
- else
- {
- return iconv_substr($str,$start,$length,$charset).$suffix;
- }
- }
- $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));
- return $slice.$suffix;
- }
- echo substr_text('菜单测试',0,2);
- ?>
来源: http://click.aliyun.com/m/42600/