php内置函数
1. iconv
iconv_set_encoding('internal_encoding', 'UTF-8');
$str; //字符串的声明
$num=iconv_strlen($str);
$str_substr=iconv_substr($str, , );
2. mb
mb_internal_encoding('UTF-8');
$str;
$num=mb_substr($sub ,start ,end ,'utf-8')
测试代码
header('Content-Type: text/html;charset=utf-8');
//iconv_set_encoding('internal_encoding', 'UTF-8');
$name="实验文字!实验文字!实验文字!实验文字!";
//echo $name;
//$num=iconv_strlen($name);
//$name=iconv_substr($name, 6, 2);
//echo $name;
//echo $num;
mb_internal_encoding('UTF-8');
$num = mb_strlen($name); //字符长度
$name = mb_substr($name ,0 ,5 ,'utf-8'); //截取字符串
echo "<br>".$name;
echo $num;