i have a question about how to use sql database with php instead of using my sql database

when i use my sql database the php code to connect to the my sql database is =

$conn = mysql_connect($hostname, $user, $password);
if(!$conn)
{
echo "Unable to connect to Database";
}
else
{
mysql_select_db($database, $conn);
$query = mysql_query($selectquery);
mysql_close($conn);
}

if i have to connect to a sql databse instead of my sql database as some companies use sql database, how can i change the php code to connect, run a query and close connection to the sql database.

apart from changing the code to connect to sql database is there something else i need to do.

php my admin is used to access the tables in mysql database, which tool should be used to access data in the tables for sql database.

please advice.

thanks

You would just need to change the username, password and hostname in order to connect to that database.

Also you would have to change the names of the tables etc. so your php pulls the data or puts the data into the right place, but only if they differ from a previous database