iconv_set_encoding("internal_encoding", "UTF-8");
echo "<pre>";
var_dump(iconv_get_encoding('all'));
echo "</pre>";
/*
run:
array(3) {
["input_encoding"]=>
string(10) "ISO-8859-1"
["output_encoding"]=>
string(10) "ISO-8859-1"
["internal_encoding"]=>
string(5) "UTF-8"
}
*/