错误strlen函数未正确计算php中的单词

Question

Please help me.
$string = "Subdivision"; echo strlen($string);

Output: 23;

I want to output Output: 11;

Answer 1

I believe your string is encoded as UTF-16 and strlen is calculating it as UTF-8

Either your php file's character encoding is in UTF-16 or the string comes from source that encodes it in UTF-16

Answer 2

使用mb_strlen函数：

echo mb_strlen($string);

Answer 3

you can convert your variable encoding first before strlen

$string = "Subdivision";
// $string = mb_convert_encoding($string, "UTF-16"); //just a test and its print 22 as you and user3647971 said
$string = mb_convert_encoding($string, "UTF-8");
echo strlen($string);