htmlspecialchars（）：参数CodeIgniter中的多字节序列无效

Question

i have a problem with a codeigniter's functions. This is my controller code: http://pastebin.com/YGj9ExkU

On my local machine it works perfect, but on my remote server it returns to me warning:

Severity: Warning Message: htmlspecialchars(): Invalid multibyte sequence in argument Filename: core/Common.php Line Number: 553

The PHP versions is same - 5.3

I think that problem inside my _clean function, but i don't sure about. My searching results don't have success. Some people said that problem with encoding.

Answer 1

Make sure you specify the encoding to UTF-8, e.g.

htmlspecialchars($str, ENT_COMPAT, 'UTF-8');

The default for htmlspecialchars() is ISO-8859-1, which might explain why you get that error.