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PHP截取中文无乱码

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Release: 2016-06-13 10:54:52
Original
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这段代码好像是thinkphp里面的

/**

+----------------------------------------------------------

* 字符串截取,支持中文和其他编码

+----------------------------------------------------------

* @static

* @access public

+----------------------------------------------------------

* @param string $str 需要转换的字符串

* @param string $start 开始位置

* @param string $length 截取长度

* @param string $charset 编码格式

* @param string $suffix 截断显示字符

+----------------------------------------------------------

* @return string

+----------------------------------------------------------

*/

function msubstr($str, $start=0, $length, $charset="utf-8", $suffix=true)

{

if(function_exists("mb_substrs")){

$slice = mb_substr($str, $start, $length, $charset);

}elseif(function_exists('iconv_substr')) {

$slice = iconv_substr($str,$start,$length,$charset);

}else{    www.2cto.com

$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."…";

return $slice;

}

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