<?php
$str = '中文测试';
if (preg_match_all("/^([\x81-\xfe][\x40-\xfe])+$/", $str, $match)) {
echo '全部是汉字';
} else {
echo '不全是汉字';
}
$str = '中a文3测试';
if (preg_match("/([\x81-\xfe][\x40-\xfe])/", $str, $match)) {
echo '含有汉字';
} else {
echo '不含有汉字';
}
$str="'324是";
if(!eregi("[^\x80-\xff]","$str")){
echo "全是中文";
}else{
echo "不是";
}
$str = "中文";
if (preg_match("/[\x7f-\xff]/", $str)) {
echo "含有中文";
}else{
echo "没有中文";
}
$pattern = '/[^\x00-\x80]/';
if(preg_match($pattern,$str)){
echo "含有中文";
}else{
echo "没有中文";
}
$sc="aaaaaaaaaaaaaadddd.......##--__i汉子汉字过滤";
echo $temp=eregi_replace("[^\x80-\xff]","",$sc);
echo $temp=preg_replace("/[\\x80-\\xff]/","",$sc);