一款不錯的支持中文和其它編碼截取函數,不會出現亂碼情況,有需要的朋友可以參考一下。
代碼如下
復制代碼
/**
+----------------------------------------------------------
* 字符串截取,支持中文和其它編碼
+----------------------------------------------------------
* @param string $str 需要轉換的字符串
* @param string $start 開始位置
* @param string $length 截取長度
* @param string $charset 編碼格式
* @param string $suffix 截斷顯示字符
+----------------------------------------------------------
* @return string
+----------------------------------------------------------
*/
function msubstr($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);
}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, $length));
}
if($suffix && $str != $slice) return $slice."...";
return $slice;
}
/**
+----------------------------------------------------------
* 字符串截取,支持中文和其它編碼
+----------------------------------------------------------
* @param string $str 需要轉換的字符串
* @param string $length 截取長度
* @param string $charset 編碼格式
* @param string $suffix 截斷顯示字符
+----------------------------------------------------------
* @return string
+----------------------------------------------------------
*/
function mStr($str, $length, $charset="utf-8", $suffix=true){
return msubstr($str, 0, $length, $charset, $suffix);
}