I need to encrypt a connection string to mysql so no one can see user name or password

thanks

Can you explain a little bit more??

this connection info :

<?php
# FileName="Connection_mysql.htm"
# Type="MYSQL"
# HTTP="true"
$hostname_mainsqldb = "localhost";
$database_mainsqldb = "adb";
$username_mainsqldb = "root";
$password_mainsqldb = "12345678";
$mainsqldb = mysql_pconnect($hostname_mainsqldb, $username_mainsqldb, $password_mainsqldb) or trigger_error(mysql_error(),E_USER_ERROR);
?>

how to encrypt this so no one can just open the file at the web server
and get the username/password of my database

Well ders no point to encrypt this connection coz, nobody will have access to this page anyway, unless they have your ftp login and password.