utf 8 - PHP and MySQLi UTF8

Just in case you use "json_encode" in your code, for example:

json_encode($rows);

simply change it to:

json_encode($rows,JSON_UNESCAPED_UNICODE);

Please replace mysql_set_charset('utf8'); to $mysqli->set_charset("utf8") :-)

or mysqli_set_charset($this->mysqli,"utf8");
mysqli_set_charset($conn,"utf8");