Posted by linyupark :: 2007,October 22nd,17:05 pm

GB2312格式 
$str = “全中文”;
if  (preg_match(”/^[”.chr(0xa1).”-”.chr(0xff).”]+$/”, $str)) {
echo “这是一个纯中文字符串”;
} else {
echo “这不是一个纯中文字串”;
}
UTF-8格式 
正则表达式部分替换为 ^[\u4e00-\u9fa5]+$