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Homephp教程php手册支持中文和其他编码的php截取字符串函数分享

支持中文和其他编码的php截取字符串函数分享

Jun 13, 2016 am 09:40 AM
phpChinesemainfunctionshareandstringinterceptsupportarticleofcoding

 这篇文章主要介绍了支持中文和其他编码的php截取字符串函数示例(截取中文字符串),需要的朋友可以参考下

简单的字符串截取方法,支持中文和其他编码,传入相对应的参数直接调用就可以了  代码如下: /**  * 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_substr"))         $slice = mb_substr($str, $start, $length, $charset);     elseif(function_exists('iconv_substr')) {         $slice = iconv_substr($str,$start,$length,$charset);         if(false === $slice) {             $slice = '';         }     }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));     }     return $suffix ? $slice.'...' : $slice; }    
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