YA: MySQL Collation Changed With PHP

<?php
$DB_HOST = 'localhost'; // The host or domain to your MySQL database
$DB_NAME = 'my_database'; // The database containing the Tables you wish to change.
$DB_USER = 'root'; // The Username that has privilages or access to the database
$DB_PASS = 'password'; // The password associated with the username


$db = mysql_connect($DB_HOST, $DB_USER, $DB_PASS) or die('Couldn\'t Connect to MySQL. Please recheck the Host, Username and Password');
mysql_select_db($DB_NAME) or die('Couldn\'t Connect to the Database. Please double check the name of the database for typos. As well as ensure that the Username has privilages on the database');
$r = mysql_query('SHOW TABLES');
while($t= mysql_fetch_array($r)){
    foreach($t as $k => $v) {
        mysql_query("ALTER TABLE $value COLLATE latin1_swedish_ci") or die('MySQL Query Error: ' . mysql_error());
    }
}
echo 'All Tables in database, have successfully been altered.';
?>