zhangjingyu 
Here's a partial fix. It will definitely not fix everything, but will fix some of it. Hopefully enough for you to get by until your provider fix their stuff.
这是一个部分修复。它肯定不会修复一切，但会修复一些它。希望你能得到，直到你的供应商修复他们的东西。
function fix_latin1_mangled_with_utf8_maybe_hopefully_most_of_the_time($str)
{
return preg_replace_callback('#[\\xA1-\\xFF](?![\\x80-\\xBF]{2,})#', 'utf8_encode_callback', $str);
}

function utf8_encode_callback($m)
{
return utf8_encode($m[0]);
}