whoisgregg - 2:52 pm on Jun 20, 2012 (gmt 0)

The simplest migration would be to switch to the MySQL improved extension [php.net]. Assuming you have that extension, you can just swap out all your mysql_* functions with mysqli_* and everything should just work. (See Example #1 on this page [us2.php.net].)

Of course, there is more to the MySQL improved extension that just an extra letter in the function names and learning more about it may improve your coding and/or the performance of your scripts. :)