在网上找到了很多关于php截取中文方法,其中最多的还是讲到使用mb_substr函数来截取了,这个函数需要php.ini中一个拓展支持,但我没权限修改只有另想办法.
substr截取:substr() 函数返回字符串的一部分,代码如下:
<?php $rest = substr("我是中国人", -1); // returns "乱码" echo $rest.'<br />'; $rest = substr("abcdef", -2); // returns "ef" echo $rest.'<br />'; $rest = substr("abcdef", -3, 1); // returns "d" echo $rest.'<br />'; ?>
接着百度goole说可以mb_substr截取,代码如下:
<?php echo mb_substr('我们都是好孩子hehe',0,9); //运行机制提示 //Fatal error: Call to undefined function mb_substr()... ?>
后来有朋友告诉我是一般的服务器都没打开php_mbstring.dll,需要在php.ini中把php_mbstring.dll打开,找到idc商不开,只有另想办法,代码如下:
<?php function msubstr($str, $start=0, $length, $charset="utf-8", $suffix=true) { if(function_exists("mb_substr")) return mb_substr($str, $start, $length, $charset); elseif(function_exists('iconv_substr')) { return iconv_substr($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."…"; return $slice; } ?>
这个正好解决了所有问题了,看是否按字符编码来进行截取了.

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