Why is the data produced in Chinese garbled?

Why is the data in Chinese is garbled??
Here is the code to back up the database, but why the data is garbled in Chinese??
Backing Up the database
Define (' In_fdyu ', true);
Require (' includes/config.php ');
The account number, password, and name are all transmitted from the page.
if (!mysql_connect ($db _host, $db _user, $db _pass))//Connect MySQL Database
{
Echo ' Database connection failed, please check and try again ';
Exit
}
if (!mysql_select_db ($db _name))//whether the database exists
{
Echo ' does not exist database: '. $db _name. ', please check and try again ';
Exit
}
mysql_query ("Set names ' UTF8 '");
$mysql = "Set CharSet utf8;\r\n";
$q 1 = mysql_query ("Show Tables");
while ($t = mysql_fetch_array ($q 1))
{
$table = $t [0];
$q 2 = mysql_query ("Show create Table ' $table '");
$sql = Mysql_fetch_array ($q 2);
$mysql. = $sql [' Create Table ']. "; \ r \ n";
$q 3 = mysql_query ("select * from ' $table '");
while ($data = Mysql_fetch_assoc ($q 3))
{
$keys = Array_keys ($data);
$keys = Array_map (' addslashes ', $keys);
$keys = Join (' ', ' ', $keys);
$keys = "'". $keys. "`";
$vals = Array_values ($data);
$vals = Array_map (' addslashes ', $vals);
$vals = Join ("', '", $vals);
$vals = "'". $vals. "'";
$mysql. = "INSERT INTO ' $table ' ($keys) values ($vals); \ r \ n";
}
}

$filename = $db _name. "_" . Date (' y-m-d ', Time ()). ". SQL"; Storage path, default to the outermost layer of the project
$fp = fopen ($filename, ' w ');
Fputs ($fp, $mysql);
Fclose ($FP);
Header (' location:index.php ');
?>
------to solve the idea----------------------
Set Names UTF8

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