function str_split_unicode($str, $l = 0) {
if ($l > 0) {
$ret = array();
$len = mb_strlen($str, "utf-8");
for ($i = 0; $i < $len; $i += $l) {
$ret[] = mb_substr($str, $i, $l, "utf-8");
}
return $ret;
}
return preg_split("//u", $str, -1, preg_split_no_empty);
}
$str = ' z 十 三';
echo strlen($str),'--strlen','<br>';
echo mb_strlen($str, 'utf-8'),'--mb_strlen','<br>';
$arrstr = str_split($str);
$arrstr = str_split_unicode($str);//符合要求
$temp='';
foreach ($arrstr as $val){
$temp.= trim($val);
}
echo $temp, '<br>';//符合要求，去除空格后的字符串
$arrstr = str_split_unicode($temp);//符合要求
$temp='%';
foreach ($arrstr as $val){
$temp.=$val.'%';
}
echo $temp,'<br>';//符合要求，加上‘%’后的字符串
echo mb_strlen($temp),'<br>';
echo mb_strlen($temp, 'utf-8');//符合要求
下面用java代码来实现
/**
*
*/
package cn.com.songjy.demo;
/**
* @author songjianyong
*
*/
public class likesqlconditiondemo {
public static void main(string[] args) {
system.out.println(getlikesqlcondition(" aa a d "));//输出结果是：%a%a%a%d%
}
public static string getlikesqlcondition(string condition){
if(condition==null || condition.trim().length()==0)
return null;
condition = trim(condition);//去除空格
string[] str = condition.split("");
string temp = "";
for (string string : str) {
temp+=string+"%";
}
return temp;
}
public static string trim(string str){
string temp = "";
for(int i=0; i<str.length(); i++){
temp = (new stringbuilder()).append(temp).append(str.substring(i, i+1).trim()).tostring();
}
return temp;
}
}