Updating to PHP 5.4

Hi there!

We got this message from our host:

“PHP, the web programming language, has several different versions and we will be phasing out PHP version 5.2 in the near future as it has been unsupported by its creators for several years now, along with PHP 5.3. Your account is currently using version 5.2/5.3 and you are strongly encouraged to switch to version 5.4 within the next 7 days. If you do not then your account will be automatically upgraded to 5.4 along with any extensions you have chosen to include in your current 5.2/5.3 configuration.”

Do I have to do all this manually to avoid breaking your plugin?

http://wordpress.org/plugins/imagemapper/